I've been in the tactical shooting arena for more than 15 years and have used Leupold MK 4's, IOR's and now own a US Optics on my tactical rifle.
Leupolds MK 4 glass I would rate as just OK or average. IOR's glass is incredible and well US Optics glass is the best Iíve seen or used.
A couple years back I built a gun for moose hunting in Alaska. .300 WSM
LH Win model 70 Featherweight. I didnít want a heavy scope so I went with the Burris 4.5-14X32mm Short Mag compact scope. In the Burris brochure the Short mag compactís glass is listed in the good category and not there best.
I love the Burris short mag scope and the glass is really fantastic. Now itís not as good as the IOR or US Optics glass, but itís a lot better than my Leupold MK 4 glass and itís only Burrisís good glass. Their tactical scopes come with their best glass, which Iím guessing would be outstanding glass and itís a lot cheaper than some of the other big name high priced scopes out there.
Iíve never had a warranty issue so I canít talk about their customer service, but did talk with them about changing the duplex reticle to the ballistic plex. The tech said send it in with $50.00 bucks and itís get taken care in a day or two from receiving it.
I like the Burris short mag so well I put one on my sonís Model 70 featherweight .243. Good chance my next guns will wear a Burris