Dunlop John Petrucci Trinity Pick

I've been using Dunlop Flow for years now. 0.73, 0.88, 1.5, Petrucci's 2.0 and his more traditionally shaped Jazz III made of Ultex. Trinity is the best yet; MUCH better grip than any other Jazz picks I've tried, and just slightly brighter than Petrucci's 2.0 Flow. The durability is great, and once you eventually wear down one edge, you got two more on the same pick.

It's relatively tiny size might take some getting used to at first, but I think it's worth it. It demands your playing to be much more accurate, and the thickness gives you more dynamic control than thinner picks.

Highly recommended for any electric, though one might prefer the brighter sound of a thin pick for down tuned or extended range guitars, in particular for playing metal rhythm. Works great for acoustics too, if you're looking for a fuller, not-so-bright sound.