Dude, I have a bias against JBL. Not shy about it. People who have JBLs love them and tout them all the time. I'm sure the higher end JBL products are good, but they seem rather expensive IMO. I don't think Mackie speakers offer a very good value either. If people want to overpay for the Mackie name that's fine with me, it's not my money.
I own Electro-Voice mostly, I've owned Yamaha speakers and I respect the price performance ratio and the quality. I own and have used Peavey speakers and consider them to be workhorses and they deliver good sound quality as well as a good bang for the buck IMO. Newcomers like FBT, QSC, RCF and others have surpassed JBL. JBL is coasting along on their reputation that they made long ago. But if you like JBL products, use them and I'm happy for you, but I won't be buying any JBL speakers. I could be 100% wrong and I reserve the right to change my opinion if I come across information or have an experience that shows me that I should.
When I go out to bars, mostly to see musical acts, I see mostly EV, Peavey and Yamaha speakers. Once in a while I see JBL and Mackie. I've also seen some Behringer speakers, surprisingly being used as monitors for performers. This may be a regional thing or ???