I don't think that's correct. There are a lot of helpful people on this forum who would certainly advise you if they had something to contribute. I haven't seen anyone here who uses Infinity, so there may just be a knowledge gap.
As I recall, Beta have always been the pricier speakers...by far. Also, the reviews I've seen indicate the Infinity's are basically JBL's with flashier nameplates and higher prices. If you like the sound of Infinity, you'll undoubtedly like the sound of JBL. Save some money. But first and foremost, do what every person on this forum will suggest to you....go audition and let your ears determine your new speaker choice (within budget constraints, of course...eh, Mulie?).
Happy hunting.