I have shot both, and got to handle the largest collection of Devels in the world, belonging to Wayne Novak.
Got to shoot both the ASP and Devel side-by-side with the 3913 when it came out. Overall, the 3913 was the best of the bunch. Second was the Devel - just more useful. The ASP was certainly groundbreaking when it was first introduced, but the Guttersnipe was difficult to transition to, and was not as accurate in any shooter's hands that it was passed toduring the trial.

Also had a several Detonics over the last ten years or so. Again, an interesting concept that had its time in the sun. Too heavy for such a limited capacity, and the idea that you would carry it hammer down on a live round was a poor joke.