I understand I misinterpreted the term "closed guard" from what the OP meant, but damn, I guess I left myself open for people who only read the first page of comments before bashing someone.
I train in no-gi only and closed guard seems like pretty much a stall position. If my opponent has any base at all I'm not going to sweep them and it's much harder generally for me to attack. I just end up playing with my opponent's arms in a closed guard most of the time. Open guard is just much more effective for me..
this. I train in no-gi (mostly) and I don't have nearly the number of options with a closed guard, so open.
I use close guard. It's rediculously underrated, and so many counters that even if your opponent does somehow manage to open it, a sweep is usually right there. If the sweep fails it's easy to go back to closed.
Everyonce in a while brown belts and black belts have visited my gym and tried to stand up in my closed guard, before they lose their base and give me this serious "what the fuck was that" look. These aren't big secrets either, just basic guard retention, but in my area the c.guard is so rare in upperlevel competition that it takes them a while to adjust.