i use quorn mince all the time now, never buy proper meat mince, and no-one in the family even noticed. as others have said, it behaves just like normal mince and takes on the flavour of anything you cook with it.
i've made lasagne, chillie, spag bol, cottage/shepherds pie, curry, all the usual things.
i find it particularly useful as we have a couple of vegetarians in the family and it means i can cook... and we can all eat... the same thing. it's better for you too, which is what prompted me to buy it in the first place.