yeah, i figured he wouldn't be a fan. the way i look at it though, i'm not exactly a technical diver, don't do over head environments (at least as of now) and mostly just do tropical recreational dives when possible. However, I want to move to a wing and everyone seems to love dss. I try to always have my gear serviced, preferably just before the dives I do since they don't come too terribly close together, so I haven't ever even had to use it for a real situation and hope to never have to use it. It also helps to be on all my buddies about having their gear freshly serviced as well whilst diving in their midst. I understand how some people are polarized with respect to the alternate air. I just got a vyper air going from an old u.s. divers scan 4 hosed a/i computer and was hoping to only have the regulator hose and lpi hose on my reg. That coupled with a dss bp/w, i'm looking for the most naked feeling when diving i guess. I probably will get rid of it in the end, however I'm not laden with gear, I do dive in groups of 2+ most of the time, and not worried about overhead environments since I'm more of the recreational sports type diver. I just want the freedom of a bp/w and since scubaboard is where i look to for opinions to trust, I am leaning towards a dss setup. thanks for the info on this thread, and to anyone else out there that contributes, thanks for that too.