Been a few years since I last played barb... um, weapon suggestions?

Absolutely, and it’s covered in the stickied guide for the build…

The Whirlwind build has changed massively if it’s years since you last played. They added Rend to the set bonuses and amended Ambo’s Pride to cause WW to auto-apply Rends and the damage to be done over 1 second rather than 15, and the Lamentation belt to increase Rend damage by 100-150%. This changed the build to be all about Rend, and WW is just used to apply it.

There’s also a choice of weaponry (covered in the guide) depending on what you’re doing, i.e. speed-farming / low level GRs, pushing, and high-end pushing.