Quick update.....
After doing a lot of research online (including reading lots of ball reveiws on this site) I just purchased a used Storm Thunderstruck off Craigslist. As luck would have it, it fits my grip almost perfect. The span is good but the fingertip grips are maybe a size too small. Took it (as is) to the lanes where I recently started on a league and bowled a 175, 178 and 156. Love the way this ball hooks into the pocket and with very few exceptions, never left anything standing on the left side. And as it turns out, the Zone makes a good spare ball. So for an investment of just over $100 (2 balls, a 2-ball bag, which was included with the Thunderstruck and shoes) it looks like I'm back into bowling. And after throwing the Thunderstruck, I'm actually looking forward to it.
Thanks for all the info on this site!!!
Aaron