Upgrading my Macbook pro 2015? Should I?

Hey guys, I’m planning to sell my gaming PC and my gf will buy my MBP 2015 Retina and I’ll buy a better macbook for myself.

Major reason for this is portability since I’m traveling a lot lately and I’m switching to macOS because of Apple Ecosystem and its OS.

Which one should I buy that’s worth the upgrade for a MBP 2015 ?