New Driver = help needed

I had a Caddyshack moment yesterday playing in an Open Competition at my club.  Playing off 10 I had just parred the 10th, after birdyin 8 and 9,to get to level par for my round when I took my driver out of my bag going to the 11th tee, only for the head to fall off.  When I looked I discovered the shaft had snapped about a foot up from the head.  I don't have an idea how it happened because I'd put it in the bag after hitting a great drive up 10 and I didn't notice any problem with it.  Anyway, my dilemna is what to replace my beloved G15 driver with.  My handicap has come down in the last couple of years, largely because of my improved driving with the G15, but I need to find a few extra yards off the tee, and of course I want to take the lazy option through club technology rather than working harder on the range.  I'm 52, fairly fit, but with a medium clubhead speed, being more a Luke Donald than a Bubba Watson.  I've considered the RBZ, although I hate the white head, and the Callaway Razr Fit, but I'm interested in hearing some suggestions.  I liked the G15 initially because of its forgivenes, but my game has improved considerably over the last year.

Thanks for all the comments.  I have thought about replacing the shaft with a mid kick shaft to get lower launch, but its a draw bias head that I got to correct a very destructive slice.  My golf has improved considerably over the past couple of years after I made a conscious decision to play more, and I think I can look at a different driver.  I played this morning with a G5 that a mate lent me, and if anything I'm hitting the ball with a slight fade, and also getting 10 yards or so extra distance without a draw bias, so it confirmed that I can move away from it.  I like the look of the i20, and being a bit of a Ping disciple I think I'll go and get fitted properly.  I've discovered that as part of our club fees that we actually have insurance against club breakage so it looks like I'll get half the price of  anew toy from them.  All in all not a bad result.  Thanks again.