I have a tub of the original formulation before they pulled it for a while. It's a good choice if you are specifically looking for something with 1,3. I like a couple others better. Can't speak to their re-launched product.
I like it. Good preworkout. I'm using Prime Nutrition's PWO-MAX right now and it's excellent. I don't take any pre workout that doesn't have 1,3-dimeth, amp citrate, and some special stims in it.