I had Seekins DBM on my Rem 5r, and I have also used Badger's DBM (I want to say it was M5). Anyhow, I liked Seekins as it had the ambidextrous push button mechanism as opposed to a latch.
I've lurked and participated on many different firearms forums for quite a few years. There are some companies where you read nothing negative about them. Seekins is one of those companies. Also, they support the shooting supports like crazy. I've seen Seekins banners in many different competitions' photos. I believe the owner competes as well.