MSilvia:I'm sure they're fine for most recreational diving, but I do some deco from time to time, and I want to be sure my gear isn't going to spaz out on me.
I'll second that. I've got quite a few dives with an AI computer, but once I got more serious about the dives, the simplicity of the SPG, along with using multiple gases, made the AI much less useful.
The big thing with AI is if it works, its nice, if it doesn't, you sit out some dives because you have no backup means to monitor air. If I were still using one, I would have an SPG in the kit for backup.
MD