For me I always see performance vs price. I remember when I first started I got some wally-world $50 POS that actually worked for some time. Considering how much it was, in hindsight the fact that it worked is amazing.
So for me, the worst gun I ever used were the first DMs. For such a premium price I excepted them to shoot lazers (no, really, I wanted frinkin laser beams
). What I got instead was problem after problem after problem. Oh, yay, it shooting now!! Chop chop chop.
Sure we may have just got a few duds between everyone I knew who had one, but it is that kind of thing that has turned me away from DMs ever since.