D&D General Best D&D product of any edition (non-core book)

[Voadam]

It was the first or one of the first 2e books for FR that came out.

Under Illefarn was one of the first 1e FR books, not 2e after the 1e FR campaign setting came out.

It is great, it gives a little mini setting and a flavor to the Forgotten Realms with a D&Dized Tolkien feel of its lost dwarven kingdom.

 

[aco175]

Oh I have Ghosts of Dragonspear Castle! OK so GoDC is basically the updated version of Under Illefarn?

If you spend coin on it, you will likely be upset since you have the updated version. There might be some older quests that are still ok, like one involving negotiating with the lizardmen of the swamp, if I'm recalling right.

 

[Sacrosanct]

The Complete Bard's Handbook.

It revolutionized bards and turned them into the party-leading heroes they were always meant to be.

Sadly, no one bought it, and bards are still de facto NPCs.

When that book came out, I played my first (and only) bard. A blade. I admit he was pretty cool