I've always wanted to growvmy own chillis. And about a year ago, Madras was about my maximum tolerance, but after eating spicy food all the time, you'd be surprised how your tolerance goes up. Back in the Madras days, if I tried a Vindaloo, there'd be no flavour, but funnily enough there is now.
Hottest thing I've had though is a Chilli Con Carne made with Naga Viper Chillis at this fair. That made the insides of my ears itch for ages and I went light headed, I only had a spoonful. It was apparantly the hottest chilli in the world at the time (although in a chilli it's diluted with all the ingredients), but I think there's a new one now. There were actually these really big (not muscley) guys that were eating these chillis whole. That must be bad for heartburn lol