Is it any good? Or is the twist lock thing just a patch on a bad toilet? For years I've been happy to rely on the fearsome twosome (joker and flapper) to prevent backflow. If they don't do it - fix em!

Our Head Mate is well past it's prime (age, not flush water), and the cost of a rebuild and a new seat make a new head attractive. But the Head Mate has been discontinued, with no apparent replacement (or is it the ComfortMate?). I don't feel the need for a better head, but I'd hate to buy something worse!

So, what to get? The Groco K is too much $$, as good as it may be. Johnson Aqua T? Raritan PH II? Groco HF? Something I've overlooked?

The Admiral and I await your advice.