My main system speakers are Impressions. I use a Classe CA-D200 (class D, 200wpc/8Ω amp paired with an ARC LS7 (tube) preamp and I've never had the urge to change either. The CA-D200 provides excellent bass control, silky midrange, and effortless high frequencies.
I do highly recommend taking your time with speaker placement, use songs that you love and know by heart - it's time consuming but should be fun! For reference, my room is 13.5 wide by 25 feet deep with an 8 foot ceiling. My speaker placement is (center of front of speaker) 5 feet from the front wall and a 3.5 feet from the side walls. I sit about 8 feet from the rear wall of the room.