I'll weigh in on this one, like Canners, I have used many many keeley made bats, and I am currently using 2 B3 root shaped bats. If I am being brutally honest, the B3 bats, in my opinion, are fractionally more forgiving and you are also more likely to get a monstrous bat. I've had 3 b3s and they are all enormous, and put my keeleys to shame tbh, and the keeleys are no slouches either. I feel like you wouldn't go wrong with either as both will give you a great performing bat. However, if I could only buy one, it would probably be a B3 low density