I guess I will give the CE4000's a good looking over and keep them if there are no major issues. I am 62 and I don't plan on schlepping gear around for more than about five more years, so hopefully we both hold out.
If an amp goes down I can easily run on two amps since I am biamping in stereo.
Here is a question for the amp experts:
On most gigs I run four tops over two dual 18's. The four tops are on amp #1 in stereo. The two subs are on channel one on amps #2 & #3. I have my subs wired with NL8's so if I need the second pair of subs I can jumper off of the first pair and pick up power for the second pair from channel two of amps #2 & #3. Each sub on a channel.
My thinking being that I have power supplies from two amps on subs instead of one. And both amps are getting the same amount of use at half the load.
On one hand it makes sense to only use one amp on subs and keep the third in reserve, but my gut tells me three running amps gives me options and security.
My question is, is it better to use one amp with both channels driven or two amps with one channel each driven?
Thanks for all the great responses....Scott