For my bedroom I'm running Ascend CMT-340SE "mini-towers" and an Outlaw LFM-1EX sub. Speakers are driven by an Emotiva XDA-1 preamp/DAC, dbx 223s crossover, and Emotiva UPA-2 power amp (125 honest watts per channel). My sources are Sony BDP-S580 to play SACDs and stream music and an Apple Airport Express to play music off the computer/smartphone. I sometimes run the computer directly into the DAC with a TOSLINK cable if I want to play 96/24 music and not deal with the Sony. I also have a TV in the bedroom, and I use the system for 2.1 HT audio, even though it's primary purpose is music.
Total cost is ~ 2000 (excluding phone/computer), and it sounds fantastic for blues/jazz as well as hip hop. The electronics provide very good detail and control, the speakers are airy but can play loud when necessary, and the sub is a beast. My room is 12x15x10, and the sound definitely fills it. I don't think I could get any better system to play digital music for the money.
The one component that I'm missing is a parametric equalizer. If I find a good quality, inexpensive component that can EQ and also serve as an active crossover, I'll replace the dbx.