I have Lone Wolf barrels in both Glocks, they provide more chamber support over the factory barrels. The best aftermarket barrels these days seem to be from KKM. Both Lone Wolf and Storm Lake have fallen out of favor. The factory barrel is fine if you don't reload the brass from hot loads. Double Taps reputation has suffered a bit by chrono results not matching the advertised MV. You can check out the Underwood loads here:

http://www.underwoodammo.com/10mmauto.aspx