Hi JoeyA!
I'm playing with the BK3 since a year now, and I found it not easy to adjust to. At least not like the BK2!
let me explain: the BK2 is a nice, well made well working break cue, which feel almost like a normal cue, just a bit stiffer and "ready o work"
The BK3 is a different beast. It's stiffer, lighter, and need less power to achieve a good spread of balls.
Balance point is moved forward, so different grip and follow trough.
Add power on break, and white comes hard to control. It need a certain speed to produce a great result, but if you hit whit wrong speed, or if your break is unconsistant, you might encounter poor results.
And of course, you need a center hit on cueball , or withey will take off!!
As for the grip, I sweat a lot, so the sport grip works for me, but it's a detail.
Hope this help, and of course all above is just my humble opinion!
Have a great one!