Never had the GHB salt but tried BDO and GBL. I think I actually somewhat preferred BDO. However, in retrospect, I don't really think its the drug for me. My golden dose was so low and always so hard to hit dead on. Even a little too much would make me dizzy and nauseous and it would become very much not fun or euphoric (very similar to my response to opiates, actually). On the other hand, too little would just do nothing, and then I'd try and take more and it'd be too much suddenly.
Even when I hit my golden dose, I never found it particularly prosocial, or at least it didn't do anything 2-3 beers couldn't do. In fact, I can't think of anything BDO/GBL does that booze doesn't do at least as well, and moreover taste a fuck-ton better while doing it. Of course, alcohol hangovers can get pretty nasty, and the one thing BDO/GBL does have going for it is the apparent lack of one. In fact, I never noticed much in the way of side effects, positive or negative. Sleep wasn't any easier to come by, nor was it any deeper. The one time I took enough to be sick and pass out, I fell into this really weird, almost hypnagogic, state. I had this crazy dream about being at a gas station on stilts 200 ft tall, presumably in a future where flying cars are the norm. But it was late, in the dream, and no one was driving, and as I was stranded at this gas station, I tried to jump across to another platform. I didn't make it and so kept falling until I woke up, and I remember waking up kinda pissed off and confused.
It combo'd on one occasion very well with threshold doses of cocaine and MDMA. I'd repeat that again, given the chance. Otherwise, it seems like it would be fun to do every now and again, for shits, but I don't get the whole habituation thing with it.