I think it depends on who you are or where you live. JBL is still strong in the studio, record plants and broadcast industry. In the consumer market they are highly sort after in Japan and HongKong which is where the bulk sales are. I heard 3 pairs of DD67000 in peoples homes in HK. It was all about JBL. B&W are out there but having heard a marketing presentation at hifi show recently I think they are just cycling technology. Just Bling. The designs have not appreciably changed for a long time apart from some driver materials changes. If you are patient you can score drivers for some JBLs iconic systems.
The difference between the Euro diy drivers and JBL is the former are components for home bookshelf systems - HiFi sound. They will get you to 55 mph. They sound like loudspeakers. In other words compressed. The laws of physics control what you hear btw. The latter are for Texas bookshelf systems at studio monitoring levels. Real Sound. Incredible linearity. They will get you to 215mph. Nothing even comes close imho.