I actually have a little bit of experience with Behringer rack mount powered mixers. While I normally would endorse Behringer due to my positive experience with my gutiar V-Amp 2 and rack-mount Bass V-Amp pro, I can't say the same for their rack mounted powered mixers.

Ours broke - no user servicable stuff in it. Repair cost = purchasing a new one. Guess what we did; we went and shopped for a used Peavey.

Pat, if you're racking the thing, buy something used even if it doesn't have reverb, and buy a 1 rack unit effects box and patch it in.

Silvertones mentions Carvin - that is another great choice.