My group of 50-year old Traveller-and-B/X-playing dudes LOVES Brindlewood Bay! We went absolutely nuts for it.

Also really love this tool. I tend to make up a lot on the fly (or roll on tables) and the goblins notebook is quick to capture it all.

I grew up playing B/X and then AD&D. Right now, I'm running Swords & Wizardry with a couple of house rules and it's really feeling like my forever home.