Aimpoint Optics

Cant beat that, I bought one from midway 2 years or so ago. Wish i bought 5.

I prefer my micro to a PRO,
and,
to be honest, actually prefer the EoTech to either.
(although a little edge on durability and a big edge on battery life, etc. go to the AimPoint, I just like the non-tube layout better)

BUT,
when all is said and done, I have a PRO on two of the family carbines,
and I do not thing there is a better quality and price ratio in a RDS anywhere.

I would get the PRO if I was you.
If you are going to spend the higher price, I would get a Micro, not the M series.