Zeke, the amps you have listed are not so powerful risking you leave speakers underpowered. For what it's worth, JRDG C-500 give you much more power. Compairing a more powerful amp to a lesser, should probably make you nod towards to one with more power. JRDG won't give you a "bloom" but rely more on your cdp and speaker cable to set the sonic ideal. C-500 is very neutral but not sharp. If you have a large room, i would not go for those you listed. I would myself try the C-500 and a wise choice of speaker cable. Next step from that is a combo of pre/power amps.