I have found there customer service to be similar to RCBS. They take care of you, no questions asked.
I have only had one real warranty issue. Had a 3-9 compact that had a bad nitrogen seal. Fixed, no questions asked.
All of the other issues have been self inflicted. Still, all fixed. No questions asked.
I have and have had eight Burris scopes and one set of Sig Binoculars. Love 'em and have nothing bad to say.
I have been liking my Nikon's a lot lately, but that is strictly preference and not due to any fault of Burris.
It does seem, however, that good customer service is "luck of the draw" with any company.