Best unfunded class?
I've had pretty good luck with Mihile recently, but from my experience most classes with epic 6-9% main stat on all equips do fairly well. Coming from someone that's got every class to 140, I really only didn't like Mech due to the constant need for upkeep on bots but that's just my opinion as I probably had bad bot placement to begin with.
I think outside of BT/Jett whom have some broken things, every class is pretty usable in endgame content.
I feel that you should define what you feel is "best" first and then go from there.
Personally - "Damage" - Hero"Utility" - Kanna, Bishop, Mihile"Style" - Mercedes, Cadena, Blaster.
i'd say zero is still good at being unfunded, u can get the weapon to unique w/o cubing. also the wpn is fixed as 2ndary as well so the potential is doubled. Plus if u want the Emblem as well, u hav to go through the story line as well for coins to trade with.
I've heard some pretty good thinks about Ark, even though I've never actually played it.
Shade needs funding...much more than other pirate classes just to be mediocre. Don't get me wrong i like shade's story, but range sucks. Ark is pretty good though and has a decent backstory. So go with Ark if you wish.
Ark. Then Shade i think.