I've been very interested in the 3M guns .... seems like a great idea and I love their other products, plus I think I could use all my PPS stuff with them out of the box. I'll have to research them a bit more.
What's the typical price for a gallon of "good" Verdora Green versus "cheap" paint? Price is certainly not enough of an issue for me that I would use poor quality paint, but in my opinion the car is not worthy of $1000/gal paint either. I'd much rather screw up $300/gal paint than $1000/gal
My main concern when it come to paint is ease of use, flexibility in the temps/humidity it requires, ease of sanding (if needed), adhesion, resistance to runs etc.