For guitarists here.

I use Jim Dunlop USA 0.60mm (Grey color).

I don´t feel comfortable with picks heaviers. This one is perfect for me, especially when I have to use a very fast alternate picking in the 6º or 5º string.
 
I use dunlop 1.00 blue and the 1.14 pink ones. The 1.0 is slightly bigger so I have that as my main pick of choice.
 
jazz IIIs are about 1.4 i think, something along those lines, i use em too, the red ones, i believe there are black and red ones, but i love mine, theyre smaller and pointier!! when im not playing metal i whip out my orange dunlop tortex .6!!!
 
I use Dean Markley 10's and Ernie Ball 11's. Mostly 10's because they fit into my Ibanez best because of the floyd rose. I'm not really interested buying a new spring. I love the sound that those strings give me with my Dunlop 3mm pics. :lol: