Came across these recently...seemingly new Gibson B-25 models in the acoustic line.
They don't seem to be a reissue of the previous model, which was more a round shoulder dreadnought-ish shape. These seem to share a silhouette of the J line, albeit with smaller dimensions akin to a...
My mahogany-neck TradPro2 needs an adjustment a couple of times a year thanks to the temperature and humidity swings in Barcelona. The maple-neck studio, and the other instruments, seem to hold better and have rarely needed adjusting.
Apologies for the delay in responding! Hadn't logged in recently. And sorry for necro'ing the post.
UK - At The Creamery, Monty's, or Alchemy.
US/Canada - Fralin, McNelly.
+1 for Schallers. They work brilliantly, and they provide an extra long screw to really anchor that thing into the instrument.
Even with them, though; you'd never catch me spinning a guitar. Asking for trouble, even if it looks rock n' roll...
I'm a big advocate of going to a boutique maker and getting a custom set. Generally they cost a bit more than an off the shelf piece, but you often get more choices, and they pay a lot of personal attention to something that will be uniquely yours. Plus you're supporting a small business :)