I was going to suggest this one (and can vouch for it being a "once in a lifetime purchase", but originally the OP said "not crazy expensive" (and to me the Hirame definitely fits this definition)

I got this one for the pump I keep in my bike locker at work. I've never used it since I put it in there (though co-workers have), but I'm still fighting with myself to not get another Hirame for that pump too - they're that much better (IMHO).