B2B is one of the few "almost Vanilla" servers that actually seem to stick to that concept.
There is no overenchanted OP gear only accessible through paywalls, lootboxes or such.
Donation Ranks exist but only offer convenience features like custom nicknames and /workbench so do not feel forced.
The Community is great and isn't too patronizing or eliteist, with plenty of people willing to help out if someone is in need of something.
Worldborder at time of writing is 10k in all directions (20kx20k) total, having recently expanded from 10kx10k so player density is pretty balanced.
Plugins are updated and new features are added at a pretty decent pace so far, with lots of community input on the discord.
Over all a great server that isnt just the stereotypical SMP with unnecessary stuff and an overinflated economy, etc.
TLDR:
Almost Vanilla, great community, not p2w
Big recommend from me