Help picking an amplifier

Hey guys!

Had posted something similar before, but looking into finally adding a power amp. Setup below:

Martanz 7011 AVR
Martin Logan Ethos (fronts)
Martin Logan Motif X (center)
Martin Logan Motion 40 (rears)
Martin Logan Dynamo 1500 (sub)
My cabling will all be improved soon - but I have upgraded power cords on Ethos and Marantz

Obviously, I'm a fan of ML. I like the warm sound of the electrostat and Marantz combo, so I want to find something that will compliment them. Where I'm torn - should I get a 5 channel power amp, or would a 3 channel serve me well? I do watch a lot of movies/PS4, but the rears don't get used all that much anyways. I was thinking to save a little $$$, I could get a 3 channel to power just the fronts. 

I know that electrostats are tricky, and I have been told to try out several amps. I think I have narrowed it down:

Rotel RMB-1575 (there's a great deal on one here)
Anthem MCA 325
Parasound A31

There could be others, but I know people have spoken highly of all of them. This will be my first amp, so I want to make sure I get something "decent" - doesn't have to be super pricey, as I would rather wait until I move houses to get into really high end stuff. 

I'm a newbie on the audio side, I've always been more into the video stuff. Thanks in advance for any help/guidance/input!
your mls don't look especially hard to drive, so any of your choices should work, but i'd opt for the parasound, which is hard to beat without spending a lot more. i'd probably start with a 3 channel amp, since you can always add another amp.
The great deal like the Rotel is not the same as a great amp.
That Rotel is a Class D design and were not well received when Rotel introduced them.  Maybe this is why Rotel has gone back to Class A/B designs. 

Either the Parasound or Anthem will get the job done powering the front 3 which in an HT install, are the most critical. 
@kalali thats a little high for my price range LOL. i have always looked at Mac though too
i actually think i will go 5 channel - i was going to buy a 2 or 3 and then add another upgrade later...but i that seems like a waste of time, money and space. im torn between: anthem a5, parasound a51, rotel rmb-1585
What did you ultimately do?  I am just building a system.  Need it all including the TV.  Have been looking at the Marantz 7 channel AVR, Double Impacts that likely don't need extra power or Buchardt S400 - both with a center channel.  I don't really have room for floor standing rears, but have 4 celing speakers I thought I would use for rears and height speakers.
I think you should be more careful in amp selection. I see from specs of the Ethos the following:

92 dB/2.83 volts/meter
Nominal: 4 ohms, 0.8 ohms @ 20 kHz Crossover Frequency
375 Hz

0.8 ohm !! Argh that is low. And 90 ish dB is ok not bad for sensitivity. 

You will need an amp that is made to be stable for low impedance. Going below 2 ohm is not a good start.
I ended up getting a Krell Chorus 5200...its amazing. I also went separates, and have a Marantz 8805 to pair w/ oh my!