Tyres are very personal, you tend to pick a brand and stick with them, for me it is Michelin pro race, I think they are upto the fourth generation of them. But, as with everything they get superceeded, and when they do you get to pick up bargains of the old stock. Chain reaction have them on sale with £20 off list price red/black only but cheap enough to stockpile a couple of years worth.
http://www.chainreactioncycles.com/mich ... -prod26230