your in the becker forum, so OF COURSE the bk2
But anyway, this is how it breaks down for one or the other. They have different handle shapes, so it comes to personal preferance, some like the esee handle, others think its too blocky and prefer the the becker. The blade shape is different as well and the becker is about a 3/8 shorter IIRC. I like the shape of the becker better just because i think it drills better. The esee comes with micarta handles and a kydex sheath, but both are easily found for the becker. If you dont need micarta or kydex, the becker comes in at around $60. If you need those things, and they are both great additions to the knife, then both will end up being around the same price. Now as for warranty, the esee has a no questions asked warranty, where no matter what you do they will replace it. Kabar has a similar warranty, except they just wont replace a knife that has been tortured, but other than that they will take care of you if you just so happen to break it, which is highly unlikely. Both have solid heat treats and great fit and finish.
So in the end, its about handle comfort really, or looks. And both those are solely your discretion. Not really much help was i?