I like Auto's, but don't think they have any real advantage other than being a nice novelty that's "neet" to play with. Most of the quality auto's I've had, Boker, Microtech, Etc... I never worried about mechanical failure, but as with anything mechanical, it's possible. They are illegal to carry where I live, so I'll never use one for EDC, because it's just not worth the risk. I know any auto I buy will be a drawer queen, before I ever buy it, but still I wouldn't take for my L-UDT. Somday, I'd even like an UltraTech.