Suggestions for an amp

For me the best: Esoteric f-05,  Mark Levinson 585 ,tube :Jadis DA 88. 

Those are great but at different price points than the OP is willing to pay. 

I run a Denon AVR-X4000 (a few years old) through a Parasound P5 pre-amp w/HT bypass and B&K EX-442 Sonata amp that puts 350 wpc through my 4 ohm Maggie MMGs.  The P5 also has an MM/MC phono stage.
Works quite nicely for both my HT and 2.1 channel listening. 
You could pick up a 442 and P5 for under a grand like I did - both in mint condition.
Problem solved. 

Silver 8s are not that difficult a load for a decent amp. I drove a pair with a Yamaha A-S500 - more power than you should ever need with those speakers, and that amp bested a $3500 Rogue Pharaoh in bass performance. Get a Yamaha A-S801, used A-S1000, or Outlaw RR2160. The Outlaw has to be the absolute best value going in modern integrateds, if you can get past its unconventional looks.

Thanks everyone for the help. As caphill said, some of these may be a bit higher than I was thinking about. Since I am new to this level of equipment, I'd like to summarize what I think you are all educating me on:

One advantage of an integrated amp over an AVR is the absence of all the processing. With the integrated amp I will get a cleaner more accurate rendering of the recording. I would be able to connect it with my existing AVR when I want to use the Monitor Audio's in my surround system. Is this pretty accurate?

I am assuming the "pure direct" option on the AVR doesn't bring it anywhere near the level of the integrated amp option though Yamaha claims it bypasses all the various other sound options available on the AVR and the associated noises.

Here is where I still have some confusion. The manufacturer specs say the speakers are rated for 40 - 175 watts RMS @ 6 ohms.

Why wouldn't some of the lesser cost amps drive them well.
The Musical Fidelity M3si is rated at 85 wrms.
The Cambridge Audio Azur 840a V2 is at 120 wrms. I also looked at the Outlaw suggested earlier and a Cambridge Audio CXA60. These are all priced more comfortably for me and fit well within the range suggested by Monitor Audio.
I don't listen to my music terribly loud...what is the advantage of going to the much more powerful amps suggested?
Again, thanks for helping out a novice.