I have Burris Timberline 2x-7x-26 for my .450 Bushmaster. It is light, compact, clear,...and most importantly it provide long eye relief. I purchase the 3x-9x-40 for my DPMS 308.
Pros: eye relief, compact, clear lense, & BDC
This review was written in the old system and had content requirements that are different than reviews written today.