The one you find most comfortable.
Quote by EndTheRapture51
who pays five hundred fucking dollars for a burger
The same one you use for everything else since you're never going to have time to switch.
R.I.P. My Signature. Lost to us in the great Signature Massacre of 2014.

Quote by Master Foo
“A man who mistakes secrets for knowledge is like a man who, seeking light, hugs a candle so closely that he smothers it and burns his hand.”

It's 100% personal preference.
For example, I mainly play metal, which most people would say to use a reeeeeally thick pick for...I use a pick around 1.1ish tho, which I'd say is mid to maybe even light.
Buy a multipack and figure out what you're most comfortable with. There is no right answer that applys to everyone. Otherwise, there would only be one pick size and style.
Whatever you prefer. Definitely give the Dunlop Jazz III's a crack though!
im using an Ibanez heavy 1.000 pick. It wrote hikizume and 2 chinese words on the other side.