Marantz MA-500/700 monoblocks

[bluseminole]

Hello everyone, I need your help!!

I am looking to upgrade in the next couple of months to a pair of Revel Concerta F12s. My problem is that my cheapo Onkyo HTiB amp will simply not do these speakers justice, so I have begun looking at other options.

My end-game goal is to purchase a Sunfire or Bryston amp, but those are out of budget for now. So my question is about the Marantz MA-500 monoblocks.
I can get them for about 120 each on audiogon. At 125 wpc into 8 ohms (the f12s are 6 ohms nominal), would these have ample power?

What is your opinion on these amps and how does the marantz name stand up in this price category (I know their higher stuff is well-respected)? Also, would it be advisable to look at the more powerful 200 wpc MA-700? Thanks in advance!!