Philosophy Side Step:
CYR and Pchee2,
I have tried some of these 5x5 type of drillings and, in general, I find them far too snappy and lacking in any sense of control; kind of like CYR indicated in his mini-comparison above.
I've never even dared tried to drill up a Silver Streak solid although I have one; going to give to a friend who's a fluffer for Knoxville. Anyways,
Recently I have tried an old friend drilling to reduce the backend and get a handle on some control, since the lanes I've been bowling on have been so darn dry lately.
3x5 or 3x5.5:
It seems that since most solids I use are shined anyway, this drilling seems to help them burn up enough in the midlane and the angle, around 110 degrees helps reduce the backend, where as stacked drilling, be they 4x4, 5x5 or 6x6, all make for incredibly hard to control snaps, some larger, some smaller. In fact, I'm going to try this on a few more balls. It seems to have worked on an Igniter
and a Tornado (which can be very flippy and strong). I'm having a Power Groove drilled up this week; it's supposed to be much stronger than its specs indicate and I think I'm going to try this type of drilling on it also.