Don't just take other people's recommendations for speakers. Go to stereo shop and A/B all the different speakers until you find a pair that you like. The speakers are the most important part of the system. I can't stress it enough that you must go listen and compare the speakers instead of justing buying what others like. I personally listened to a ton of speakers and ended up getting Diamond Audio Hex 600s components for the front and Diamond Audio M361 coaxials in the rear. When I heard these speakers (mainly the HEX components) I was instantly sold as they are amazing (although not cheap).

Rob

P.S. For an amplifier you don't need massive power. My AMP is 50W x 4 (Diamond Audio D7054) and I drive the front and rear speakers from 2 channels and bridge the remaining 2 channels to give 100W to the sub. Ask Tony, he has heard my system. I can play it so loud that my ears hurt way before the speakers will blow.