Bought a Burris 2-7 FF II with Ballistic Plex last year for a muzzle loader. Nice scope, should have been perfect for that application - had to take it off and it sits on a shelf. Eye relief is not adequate for something with a fair amount of recoil.
I wasn't happy with the Burris FFII 2-7 either, but this thread is about 3-9 scopes. The Burris FFII 3-9x40 scopes with the ballistic plex reticle have been some of the most durable scopes I've owned.