We have a red rubber ball gag, but I can't stand the taste of it, plus rubber irritates my skin and mouth. I don't like the feel of a ball gag anyway, I'm more of a rope and cloth kind of girl, so I'd rather be gagged by a bandana or kerchief with a knot or two in the middle of it.
I have the Aslan silicone ball gag. I really love it but I really drool a lot which makes me feel so not sexy but my b/f doesn't mind and thinks otherwise.
I'd like to try ball gags, but I have a teeny-tiny mouth, so I haven't found one that will fit comfortably yet. The few I've tried either make my jaw hurt or (like with the Tantus ball gag) go so far back that it makes me cough or start gagging.
Tried twice never really got into it, but then again I find that being a sub isn't something I often enjoy, unless the person in the dominant role really has me turned on first.