it's a real eye opener - the differences we all see. the important thing is people can at least try out the ideas for themselves and make up their own minds.
the spice aspect is i think a gap for me.
i'm finding both low spice base (~2%, CA's aka for eg is 2.6%, based on spice volume and initial chopped onion volume) and low spice dish produce the best result (max 1 tsp as stated by others above). CA's vindaloo took me by surprise (higher spice 2.25tsp which is what i used to use before reducing down - same for me as Bobby Bhuna described above) - something for the new yr to experiment along the lines of. i'd also like to try out along the lines of tgad2007 spice at 1% in base.