Since they are at the very top, I'd like to comment on the Logitech Z623..
These speakers are very Boss.
3 separate inputs; (two 3.5 mm and 1 composite/RCA)
Subwoofer has its own knob control.
I've seen these reviewed toe to toe against $300 Harmon Kardon sets.
I actually used these as my home theater speakers in conjunction with my 30 FT HDMI from my computer.
For me, the BEST part is that my equipment all works together without the "audio reciever" most home theaters have to deal with.
I can control volume using the sound desktop icon, my physical volume buttons, TV remote OR the actual speaker knobs. I simply have no need of an audio receiver; but I still want great sound.
For me, the Logitech Z623 fits the bill