I got three amp combinations to choose from:

Mcintosh MC-431 100x4 and Mcintosh MC-427 100x2 Combo.

Audison VRx 6.420 75x4+85x2

Adcom GFA-5475 75x4 and Adcom GFA-5275 75x2 Combo.

These will run fronts and rears (not sure yet about rears at all actually) and mid-bass passively. The speakers will most likely be Rainbow Profi Vanadiums.
I've ran some of these amps before with Focal speakers, but I am not yet completely familiar with the Rainbows. That's why I ask you guys with Rainbow speakers (specially Don) if any of you have experience with these amp/speaker combinations? or which amp combo do you think would get along better with the Rainbows? Just trying to hear some opinions.
Thanks.

here are the big boys.. the small ones I have yet to dig out of the storage.

 

nice amps! no personal experiences with any of those amps, but i'd say go for the mcintosh since it puts out the most power of all those amps. my germaniams seem to laugh at the power i give them, which is roughly 100 watts per side...but they do get quite loud.

 

Thats really up to you to decide. Each amp will have it's own charcteristics and "personality". Until you try each it'll be hard to say what would be the ideal combination for your particular setup.

 

If your staying passive, then the VRx with channels 1-4 bridged delivering in the mid-high 200 per side range. With a 300+ or so on tap for a sub stage. My personal opinion tho...

 

Actually - hell with the Audi you still have the option to go active with a few 'extensions'..