Depends, I don't know why, but I always find that if I get it takeaway, it feels less spicy then when I'm eating in.... so usually if I'm there I'll get hot, and if I get takeaway I get extra hot.
Tbh hot is the tastiest. Extra hot is not that great(although I do order it) but tbh as long as the chicken has moisture inside and is flavourful I don't care too much. It does need to be hot though.