I bought a set of 4 Bridgestone Potenza So3's last year and now 14,000 miles later my reat tirest are completely flat but I ahve about another 14,000 left on the front ones. I don't want to but Bridgestone anymore, what else is out there that handles great?

B

 

14,000 is a little over the average for the rears, why don't you want to go Bridgestone again?

I'd say go with another pair of S-03 rears, by the time they are gone you'll need fronts, then you can switch to whatever matching set you like. You shouldn't mix and match brands front and rear.