I've got a balanced Halcyon one. It's one of the newer models that has the balancing done via a "duckbill" valve which is in the side of the main chamber eliminating the somewhat more cumbersome arrangement they had with the T shaped balancing.
It's bloody great! There is much joy to be had pissing whilst wearing a DS, even more to be able to take your time back on the boat getting things off rather than frantically scrabbling and clawing your way to the head leaving an expensive trail of kit...
The valve I use has a large outer radius so is easy to turn with thick gloves. It also has a norprene (not a typo) hose which is pretty hard to kink shut (so I've heard, I haven't dived any other sort of Pee valve to know any difference.).
I am getting a couple of quick disconnects so that I can stop flicking piss all over myself whenever I take the hose off the catheter.
Price was good too.. $250ish landed from Deepstop.de