No potty is functional for boys. You'll have to hold his penis down regardless of which one you get. That said, I definitely recommend a stand-alone potty over a ring. The ring was not nearly big enough for us to consistently get the pee into the potty. Also, if he's excited about it- get it. Anything to make potty training a positive experience for him. Sorry for this but can you explain what you mean by a stand-alone potty vs. a ring?