I've been trying for some time to purchase a BK Rush (REVO) Break cue new or used without luck and it looks like I'll just have to wait (3 months probably) if I'm set on getting one of those for a reasonable price. There are dealers out there that have 29 and 30" BK Rush break shafts that I can get fairly quickly, and I'm seriously contemplating purchase of one and using it with my current break cue butt (McDermott and I have an adapter to uniloc), or of purchasing a break cue butt (not Predator BK Rush REVO break, but possibly a different Predator break cue butt) to use with the BK REVO shaft. It seems that opinions are split regarding how much difference the butt of a break cue will make. So, I'd appreciate what you folks have tried and what you think regarding this. How different will it be depending on the butt? What kind of butt would yield the best results? Any other thoughts on the matter? Thanks for any opinions/help you provide.