Between the two, which do you like better?

Trijicon MRO
vs
Aimpoint Pro

Both good sights, I think the smaller MRO would look/feel more natural on an SBR.

X2... But there has been word going around that the MRO is having issues holding zero.

Aimpoints are never a bad choice

I like the prism sights better than red dots. Put a Vortex Spitfire 1x on my SBR. The etched glass reticle still gives you an aim point even when not illuminated. Then can turn on the illumination if needed in either red or green.

Neither, Primary Arms Micro Dot, 50,000hr batt. life

You can not go wrong with either. We are running 20 MROs at work, no issues yet. I like the MRO brightness dial a little better.

I'd go with an Aimpoint H1 or T1. Its the perfect size for a SBR. Sure you go could with the Primary Arms option and it would probably work just fine, but for me....I'd rather spend a little more on an Aimpoint.

MRO sits on mine and it is a great set up.

Aim point is so reliable