Never used the BBE, but the Ironmind grippers are great.
I also like their:
Titan telegraph key
Apollon's Axle
Rolling Thunder Deadlift Handle
Eagle loops are good for individual finger strength as well, or you can just make your own.
I always train my grip, but then I am paranoid about dropping a deadlift. It has not happened yet, and if I have anything to say about it, it never will.
Also like: Farmers walk, static holds, and pinch grip exercises.