I'm just thrown by you saying you have a vendor that sucks donkey balls. If you only have one that sucks donkey balls, that seems unreal to me.
My group supports around 65 applications, and I'd find it a hell of a lot easier to list the vendors that don't suck donkey balls.
I think there's one. Maybe.

Maybe I'm not looking deep enough into the question, but wouldn't this be because we do the easy parts first?