Shawn - 
First off, congratulations!  Glad there will be one more pool hall in the area.
If you want to see some of Shane's work, check out the recent work at the Q-Spot.  I think he still has some finishing up to do, but the tables look and play nice.
Let us know when you plan to have your grand opening.  We'd like to come to that.
As for the Diamonds vs. Valleys, I prefer the Valleys, but the Diamonds are nice, too.  However, if you have some of both, you make a lot more people happy.  Last I knew, there were a lot more Valley tables around here than Diamonds, anyway.  Some folks are really picky about what table they play on.  I don't care all that much.  If it doesn't roll off, it's good by me.
Will your place be a bar, or a family pool hall?  Smoking or non-smoking?  Did I miss that?