Raja on Summer Lane near hospital is lovely, but recently been getting ours from Flying Pizza / Taste of India on Sheffield Road. Better value imo - and free delivery when you spend £5 or more.
Used to use Raja a couple of years ago, but their delivery was dreadful, well over a hour on 2 or 3 occasions so stopped using them. Once phoned order in and went to pick it up 30 mins later....ended up waiting 20 mins once I got there!