williamlayton - geez, I don't know if a long slide is slower to get back on target, I think it might but hay, it depends on whatcha wanna use the 38 Super for......
If it is for defensive purposes, get a Colt Commander in 38 Super. If for target and field use, get the long slide. I do not know how much more you might get out fo a long slide in terms of velocity, but as for accuracy just make certain your barrel headspaces on the case mouth - makes the 38 Super much more accurate. Mikey.