I'm looking for a Track ball that would have a "skid snap" reaction on medium to light conditions when played from the inside.  I'm thinking the Tour X but I don't know how strong it would be on a medium condition.  I have the Mx05 with box surface and, while it's a good ball, the back-end reaction is not what I'm looking for.   I also have the Lx05 but it's too strong and burns up too fast.  I don't know anything about the new balls.

I have slower speed (13-14) and medium revs. 

Any help would be appreciated.

Wouldn't it be the hx05?

I have the Hx05 and I can't get the ball to work from inside or outside.  Changed the surface to 3000 but didn't help.  Could be just me but I don't think this is the answer.

I used a tour x for most of last season.  Have mine drilled pin above bridge.  For me, 13 - 14 mph, 300 - 325 rev, the ball has never been skid snap.  With enough side roll I can play over center arrow, but migrating any farther in usually doesn't work out well.  I suspect a stronger drilling could give you the reaction you're looking for perhaps.

The best way that I can describe the ball is this:  easy length, with a slightly angular (but smooth) move to the pocket. This ball is super predictable for me.

Last season I bowled in a house where the head oil went away quick and the backends have a tendency to over react.  My Asylum was too early, Outcry was too early, Yeti Untamed was too unpredictable off the dry, iQtp was long enough but a bit too over/under.  Simply put, the Tour X saved my season.