I'm sure you'll be happy with the Outlaw 125W x 7. However a quality amp will last 15+ years and in that time you may get more power hungry, harder to drive speakers, or want fully balanced. I think if this is your first dedicated power amplifer, I'd go for the Outlaw 125W x 7. It's only $850 But if you already have gone power amp path and looking to upgrade (like I have) going from 4 amps at 60W and 100W a piece, unbalanced, the 200W fully balanced ATI's looked more sensible than buying a Outlaw 7 x 125W (or similar)
The Outlaw 7200 and 7500 look another good option excellent prices. I believe the 200W models are made by ATI (1805 and 1807)
Course if you're well off you could just get a ATI 6007.
If you want to go down full av pre-power you will need a 5 or 7 depending what system you have (and with atmos keep that in mind) good thing about ATI they offer all the way from 2, to 7 for my model, so I could have got a single 7, a 4 +3, 2+5, or with my 3, then maybe whatever atmos would require (7?) Emotiva or Outlaw don't do this
Lots of options really, good thing about seperates, not locked into single AVR for everything. Choice of monoblocs all the way to 12 or 16 channel power amplifier or something like that.
If you do get the 7 channel 200W model it's really heavy so you may need a stronger rack.
Some of the more expensive power amps use monobloc construction (multiple toroids) rather than 1 single, or 2. So in a 7 channel amp, you have 7 toroids. Tag Mclaren did this for the 250W model way back.