We just did a quick demo with the TH Mini last Thursday for our small band PA. Use is for small venue live band blues/rock music. Most all of our larger gigs have PA provided. We have been using 2 Tuba 24's which were fine for the amount invested, but we have grown tired of the uneven frequency response they produce without a larger block of cabinets.
We have rented SRX subs in the past when concerned about the Tuba's not being enough for the gig and they were fine, but for replacement subs one of our main criteria is small size. My goal is to eventually get everything into our 5x10 trailer. (Not quite there yet, but getting closer.) I pretty much narrowed our choice down to the TH Mini as long as they sounded as good as the specs promised. While we only used recorded music for the demo, the band voted to buy them after about 3 minutes. They are increadibly small and put out an amazing level. True they don't go quite as low as the growler or other smallish 18" subs, but the sound is very powerful and has a musical/monitor quality to it and it is three cubic feet smaller than the Growler. If small is a large consideration for you, I can't imagine not being happy with the TH Mini.
I'm ordering two today and will update after some gigs.
Winston