I'm a sucker for the pirate aesthetic so Navigator's my favorite overall. It helps that he's great for PVE, and has a definite PVP niche too.
I also like the ancient aesthetic so Pharaoh Eddie gets another mark from me. My second-most used Eddie in PVP.

Back when Soldier Eddie was good his tank spam never got old either. I still like GRE and Shaman Eddie's Furies a lot. Edward the Great's is also hilarious.