I have tried both
With limited use of bk3. Bk2 is my break cue
I found bk3 to be a harder hit, little less natural of a hit ; more phenolic in nature
Bk2 really almost feels like a normal cue, you could even shoot a rack with it
Bk3 less so
In terms of better. I'm still unsure
Bk3 looks way...