I bought a cheap Bonty slick for the turbo. About 1.75 I think. It's black, it goes round and round, not great on the corners, oops sorry wrong thread... Seriously don't think it really matters, buy whatever's available. If you wear out a turbo tyre you'll have become a hardcore racer and will know plenty.
Enjoy your winter and please if you do one thing, download a Sufferfest video to your laptop. Costs about a tenner and will really help drive you to new levels, which is why you're on the turbo right?
Get 'The Hunted' to start; it's the 'friendliest' of them all. The day you buy 'Revolver' you'll be a steely eyed machine (after having a lie down to get over the nausea).