im getting my amp modded by shakedown amps. We've talked a lot about speakers. In my twin reverb cab, we've gone with a weber neomag 12" 75 w, but with a paper dust cap (as opposed to aluminum) and a vintage E120. Joe from Shakedown keeps saying the neomag with the E120 "opens up correctly, not like a k120" next to another strong JBL speaker, providing an awesome tone. Thats all the input that I have. If you're running one jbl already, the weber neomags are awesome, plus they're far lighter.
"Many are the strange chances of the world,’ said Mithrandir, ‘and help oft shall come from the hands of the weak when the Wise falter."