I've shot a M50 Reising, and both an Uzi and mini-Uzi. I'm a full auto greenhorn, but I'm fortunate enough to have decent technique (lean into the weapon, short bursts, not tempted to let rip in one burst).
It's fun, and I definitely want to take a trip to Knob Creek, but it just doesn't thrill me like it does other people I know. A good trigger on a semi-automatic can deliver a decent percentage of lead as a full auto can, and put a lot more lead on target.
Now, flamethrowers? I heard there's been times when you could rent one at Knob Creek. That I'm All Over!