I've been using a Tamiya HG III with the 0.3mm needle and ran into some problems with Tamiya acrylics clogging. Even spraying Windex or Tamiya acrylic thinners through the brush didn't help, had to strip the whole thing.
Naturally this occurred during 2 different painting sessions with a "mini" brush strip between. So switched to the Badger 360 in the interim which reminded me how much I enjoy my Badger and how often just spraying some windex/acrylic thinner through keeps it happy.
The 360 and HG III use different air hose sizes which is a pain to swap when you're in the middle of a session.
So decided to get a Badger gravity fed brush since should I run into trouble again the switch over is much smoother.
Note - not saying the HG III is a bad brush, just think it isn't as hassle free as a Badger.