Love it, I run a 3 pin tommy and wouldn't want anything else. Rock solid, damn near unbreakable, and amazing customer service.
What specifically do you want to know?[Basically is it a better option than the MBG sight ?
I cannot make a comparison because honestly I've never had another movable sight. Have not needed one I've had the tommy for.... Five years, maybe more. Before that I had a hogg it and before that the sight housings were square.Only thing I've noticed about handling MBG is the pins may be a bit brighter, wether that's your thing or not.
The only draw back I think people have are weight, which personally I'll take the penalty for the ruggedness of the site. And the second is the noise the sigh makes when pulling and pushing the bull knob to lock the yardage wheel, after a little time with the sight I've gotten to the point where you couldn't hear me engage it even If you were standing right next to me