I haven't tried the Holosight... but, I've used the BSA 42mm red dot scope for about 6 or 7 years on my slug gun now and it still works amazing.. shot a lot of deer, including my biggest, a 185-190" gross at 75 yds dead run... and I really like being able to pull up and immediately find my prey in the scope.. the thing I dont like about it though is a couple times I have forgotten to turn the scope on and it has made me miss a couple good opportunities on nice deer, but, you will have that with any electronics. Besides... the red dot only cost me $50, the Holosight i think is like $400.