Help on amp choice.

I have a carver C1000 home theater receiver which I am
happy with except for it's inability to drive my Carver
amazing III Plus speakers to higher levels (this unit has
pre outs) and I want to add a higher power amp to drive the speakers. I am considering the following:
Aragon 8008ST
Sunfire 300 Load Invarient (matches my C1000)
Adcom 565 Mono Blocks
B&K Sonata M200 Mono Blocks
Carver A-760x (725 watts@4ohm)
(all used - priced $750.00 to $1000.00)
All advice is appreciated.

Thanks,

mar4004