MC Shapeshifter vs. Vanisher?

I earned a free nail tool, which expires in a little over 2 weeks. I intended to get Boundary Pusher, but it's sold out :(

Any thoughts on Shapeshifter vs. Vanisher? I'm leaning towards the latter, since my regular emery boards work fine, but I am curious if anyone has strong feelings re either of these.

Thanks in advance! 🧡