Mine doesn't seem to be too keen on the Tesco 99 stuff, runs okay on BP Ultimate, but feels great on Optimax and now on V-Power. Suggest you try a tank of each and see what you like :-)
Always put Shell Optimax in mine - so would now be V-Power. It will run on ordinary 95RON unleaded and unless you're really pushing it, wont notice much difference.
Super Unleaded. Any of the main stream brands. Most importantly, from a petrol station with high turnover. Out of these, V-Power is the only one which I can notice a difference.