Generally speaking in your ten a penny Indian a vindaloo wont be much different than a madras, they'll just throw a bit more chilli in it.

They play up to people like you who want to show off to a couple of tarts by eating Vindaloo and Phal and burn the fuck out of their mouths coz they're ard

They also chuck potato into them as well for the 'aloo' so people who think they know what the names are dont feel daft.