I started out with a Modified CB-6000 (Stock Rings do not fit me).
However my "I gotta pee erection" as you put it would repeatedly crack the plastic tube at the seam, either causing painful pinching if partially broken, or falling off if fully split. At that point we got a Locking Birdcage style, while not as secure in the accessibility (I could not escape, but I could stimulate between the metal rods) the open bars would not split when I was engorged. I would be allowed to change over to this overnight.
Now I have a Stainless Steel CB-6000 style upgrade that I use with my original Modified CB-6000 Ring. I usually wake at least once during the night due to pee erections, but there is no chance of splitting