Its probably the most versatile auto cartridge. I think its one you would enjoy playing with Bryan. A little Blue Dot, or 800x and a 180 weight bullet would be fun on those Texas whitetail:wink:That's a good, stout load for the 10mm as far as I can recall. That's a cartridge that could have had a "magnum" suffix attached to it.
OP, I would love to have the DE, but for the versatility of switching to a 9x25 Dillon with just a barrel swap, my nod is to the Glock. The S&W would be good to, but I would be concerned about spare parts since they are no longer in production.