The BR models are a little short on elevation adjustments but this is easily solved with a tapered rail or offset rings. Clarity of glass and repeatability of adjustments seem right on. They are heavy and large beasts which may be an issue depending on the weights you are trying to achieve with your rifle. Reticle choice really is a personal thing. Check the Nightforce website for a look at them. I went for the double dot reticle. Nice, simple and uncluttered and seems natural to place a dot inside a circle. Probably not the best choice if you like to use reticle markings for holding off. Mine is the 12-42 BR model. Doubt I'll ever use more than x25 for F-class though.
Just another view,
Michael
ps highly recommend Leupold scopes as well. Lighter, good glass and plenty of internal elevation and windage adjustments. Seem to be some issues with repeatability although I never had any problems with mine and customer service re warranty appears to be excellent. Only sold it because I needed a higer magnification variable for what I wanted.
Go for the BR series. For starters they're cheaper and they have 1/8 minute clicks. The adjustable objective can be a bit of a scourge from the shooting position, but Leupold proved to the world that side focus isn't as reliable as the "old fashioned" coil spring holding the objective lens forward.
As for reticles, I went for the NP-1. It's a simple cross. However, jump on the Nightforce page and check out their range. It's a personal thing.