Check Amazon and SonicElectronix. You often need to look at 5x7's and 6x8's because some are only listed in one category.
The Image Dynamics models are usually 99 bucks and are well-regarded among the snobs. Morel 5x7 is expensive but they make a cheap 5.25 which you can use with an adapter. That's something else I forgot to mention, since you're going with an amp, check out 5.25's as well. There's nothing wrong with oval speakers, it's just that companies put more development into 5.25's, so there's much more to choose from. CDT also makes a well-priced 5.25 and they have a fantastic reputation.
Personally, I'll have a tough choice between the Infinity, Polk, and Boston Acoustics models. I doubt that I'll get an amp for them but if I did, I'd get Image Dynamics.
2013 Race Red GT/CS 6MT; Elec Pkg; RAAMat on the doors; Morel Tempo 5x7 coaxials; GT500 axle-backs painted black