I've been using TT24 since last December in our church[1]. Our first board was 'Monday piece' like we Finnish say. Power switch jammed (luckily to on position
and a little after getting it back from the warranty service, it went crazy. Lost all presets (even the FX ones..) and you couldn't save anything because 'Check that there is space left and it's not write protected.' Well, how you can check that in a mixing console?
Our dealer (Mackie's local representative) wasn't very helpful and didn't want to replace it in the first place, but when we told him that the Mackie's official technical support said it's broken and should be replaced, he quite quickly agreed to do it... It's nice to have some ways to "push".
The new board has worked almost without problems. One signal led is broken but we wouldn't want to send it to the service just because of that. When I was installing UFX2 card (the one that gives you eq+dynamics also to the digital channels) I found some bugs in the software. It seems that it stores to the presets whether there is that card or not and if you recall a preset with wrong configuration stored, it doesn't like it very much. (more explanation
http://forums.mackie.com/scripts/forum/ultimatebb.cgi?ubb=ge t_topic;f=5;t=000721) Actually our board is now in a state that it doesn't boot. I was playing that card yesterday and something went seriously wrong. It seems that the only way to correct this is to do hard reset, which deletes all snapshots and stuff. Yep, you guessed right, backups... No, there aren't any. I'm going to take a full backup maybe once a month, or something like that, in the future. *sigh* Have to leave soon to do some more playing, because it will be needed this evening and next morning.
So, though we have had problems, Mackie has been very helpful. Unfortunately you can't get that kind of a support from their Finnish representative...
I think that maybe I should write some more user comments so that this wouldn't be only a explanation of different problems.
I got an opportunity to mix one youth service with that board before we were able to go back to our church. So, this was really portable situation. I got the board for me a couple of days before that and played with it in our living room (board wasn't too big for my wife but you should have seen her glance when she saw it's package...
I had used O1V and even O2R maybe two or three times, but it was 3-4 years ago. So I hadn't much experience with digital boards, and actually my biggest analog board has been 32ch 3G Signet (and of course quite many different models of smaller A&H, Soundcraft, Behringer, Mackie etc boards have been under my control) I felt very comfortable with this board at the very beginning. I found it much more easier to use than the O1V and O2R. I haven't used the O1VR96 so can't say anything about that. Oh, had to use the Behringer DDX3216 last Thursday and fortunately it was dialed in for that band and I didn't have do anything in that hurry... Yep, if I just can decide, I'm not going to touch that model anymore.
So, though I find TT24 easy to use, it is different than any analog board. I'm not saying more difficult, it just is different. You must for example be very careful to be in the right bank when doing anything. I've tried to take a habbit to _everytime_ check that you're on right page and don't expect anything... Luckily we were able to get a computer to control it, because it just is _so_ much easier to use the control software with big color TFT and mouse+keyboard. As people have said, they don't like the feel of the v-pots and I too find it quite annoying. Maybe I should play a little more with the speed setting. But, it's easier to turn something completely off (like when setting matrixes) with the v-pots than in the control software. In the control software it's easy to input with keyboard the desired setting (like -10, 0 or 5) but I haven't found a way to input 'Off' settings with that.
I can't comment much about the onboard effects, because we bought TC M1XL and D2. I have sometimes used some onboard reverbs for snare, but I hadn't much time to play with it then, so don't just know. The onboard delay it's quite hard to use because there isn't 'Tap'-function, but D2 is good for that.
User bank is _very_ valuable for me, and now when I finally found a way to save it's settings, I'm very happy. You can access it from Utility->User bank (iirc) and it's not saved with snapshots. It's saved with venues, so Files->Save venue. There was some good reasons in Mackie forums for that, but in our situation it would work much better to save it with the snapshots. Most of the time when I'm mixing I have only 10-16 inputs so I can patch cd, fx returns and even aux masters to the same page with the mic inputs. And if you have some linked channels, you need to patch only one of the two channels, quite a good way to save space!
So, here was some comments and if you want to know more, I'm happy to answer. Sorry that this was so long post.
[1] We did quite an extensive renovation during last year, upgraded the acoustics, av-system and even pews among other things. We had A&H GL2000 with 2*Martin Audio ICT-300/side and now have TT24 with Nexo GeoS rig. Monitors are all Nexo PSx (2*8, 4*10, 2*15) and we even got active mic splitting because they're going to start TV ministry. Some pics (some good, some not so good) can be found in the addresses below. Though this is a little offtopic, I thought to tell this so you could have a little idea where I'm coming from with these comments.
http://www.dy.fi/7dchttp://ragol.kattila.org/soundpics/http://nexo-sa.com/asp/news/newspage.asp?id=386 (There's one error though, monitors are powered by Crown, but PA by Camco Vortex 6)
Blessings,