The classic burgers are lush. Also like the chicken-style pieces. The pepperoni-style things are a bit odd - I bought them to go on pizzas but they have a funny texture and taste. Not exactly horrible but a bit weird.
Quorn is often on 3 for 2 at sainsburys so I stock up
The Quorn fajita pieces are lovely. I just eat them on their own and they are great if you want to spice it up a bit! Also the Quorn ham slices and fake bacon slices are good. One of my favorites has to be the little cocktail sausages, especially for if you get the nibbles.
I never bother with the quorn readymeals or the cornish pasty/pie type things as they tend to be very low on actual quorn content and not very good value for money.
We love the quorn swedish meatballs - a few of those sauted with some mushrooms, then stirred with pasta and lloyd grossman tomato and chilli sauce is one of our all time favourite meals and can be ready in 10 minutes flat.
The steak strips are great in curry and fajitas.
I don't like the sausages that much, but they are nicer fried than they are grilled.