The magic wand is the clear winner. It’s the most versatile, pleasurable, and it fills a gap in your collection. (You already have butt plugs, and nipple clamps are easy to improvise)
BUT don’t get the original Hitachi magic wand, get either the Magic Wand Rechargeable or a Doxy.
See here for a handy comparison:
https://www.ohjoysextoy.com/magic-wand-rechargeable/