$1500 amp budget for Revels HT setup

If you can find one, an Anthem MCA-3 or, preferably, MCA-30 would be a significant improvement in both power and sonics. With 6 ohm speakers, you'll probably get about 225 wpc with the MCA-30.
The MCA-30, used, less than $1000. New, it was $1800.
Signature Home Theater is still showing it on their website, new, but I doubt it, as Anthem is apparently no longer making 3-channel amps. Still, they might have stock and be willing to deal an out-of-production piece. Normal dealer cost is about 60%, or about $1100.

How about the Classe CAV 75 for $900.00? It's a 6 channel amp or bridge the channels for 3-4-5 depending on set-up. Lots of flexibility. Could use as a nice house music system amp too.

http://www.audiogon.com/cgi-bin/cls.pl?ampsmult&1224797401&/Classe-CAV-75-

I would go with one of the older Proceeds, as Revels were voiced with ML (maker of Proceed) amps, you can easily get an Amp3 or if you want to an HPA2 (only two channel) for your price.

If you want brute power any B&K amp will work well. They sound pretty good too. The topology of their amps are all very similar. Pick channels needed and wattage desired. Resale is awful so you can pick up a lot of amp in the used market.

http://www.audiogon.com/cgi-bin/cls.pl?ampsmult&1224558009&/B-K-Reference-200.7-black;-200

Good suggestion Kennyt.