Double trigger, but I wouldn't turn a single trigger down...in fact, I have one. A DT is faster, if that's a concern (which it never has been for me.) The re-set on a single trigger can be a bit problematical if you use light loads, which I like.

But you don't have to move your hand at all with a single, and you do have to move your fingers with double triggers. Or I do, very slightly.

And I think double triggers look COOL.