I'm one of those that likes the Burris Xtreme rings, for 50.00 I can't fault them in any way. That doesn't mean better can't be had for a few more bucks though. I hear good things about EGW, would like to try their base at some point.
No matter what you get, you may find yourself switching it out down the road, if anything just to tinker. I know I have many times before and no doubt will do so again