We've had one dinner and one lunch at BOG. I think it's a combination of personal preferences and inconsistencies. It's the best TS dinner we've had in MK (and we've eaten at BOG, CRT, LTT, and CP for dinner), but considering we gave CRT and CP low marks for dinner and LTT mediocre marks...'best' doesn't mean that much. I still feel you're better leaving MK if you want TS dinner. Our appetizers were great, but the rest of the meal wasn't memorable. DH got the steak, which at the time had been heavily criticized. His was good...not rave-worthy, but good. My pork was gross and the macaroni gratin was over-salted to the point that it was inedible. The cupcakes were OK, but there are better cupcakes elsewhere at WDW.
We tried lunch back in September and while it was decent, it wasn't spectacular either. I'd still rank CHH above BOG as far as MK CS goes. We had a FP+ for lunch, which was good, because I think I would have been disappointed if we'd waited on the insane line.
All in all, everyone is going to have different experiences and preferences. I still think it's at least worth trying it once as the setting is very cool. I still prefer the CRT setting (ex. personal preference), but I'm happy to have had the opportunities to dine at BOG just to see it.