Personally I would recommend the following (mainly 'cause it's what I did):
ubid.com is selling factory reconditioned a/d/s amps. I bought a 625x (6x25 watts). I thought the same thing you are probably thinking now: only 25 watts? Let me tell you it sounds incredible! Those 25 watts are quite enough for my (and probably your) install, and the two bridged channels for 50 watts with a JL Audio 10" sub is quite enough.
I have also seen a/d/s amps of higher output on sale through ubid. I'm not sure if you would consider an auction site to be an option or not, but I am quite happy with what I bought. Furthermore, I have heard nothing but good things about a/d/s, and the prices you can get them through Ubid are crazy.