For what it is worth I thought I would add my two-penneth to this. Been meaning to try some of these for a while (since this thread), as the butcher down the road from me stocks them.
Picked up a Balti and a Madras. They're supposed to serve 4 but that's a stretch. Taste wise they're pretty poor. I wasn't expecting much, but I was expecting them to be better than jarred curry you get in supermarkets. Unfortunately, they weren't, and at