My favorite. Years ago I had the opportunity to play using a real tortoise pick. There is a reason why there is so much talk about how nice real tortoise plays. It is because tortoise is really is that good. Dunlop Ultex (or Clayton Ultem) is the closest thing to tortoise I've ever used. Warm when you want it warm, bright when you want it bright. I like the .90, 1.0, and 1.1 sizes. I used to like the .73 but found that they didn't offer the control I wanted and were a bit bright. Dunlop offers the best price and variety of Ultex pics.