I'm looking for a set of track tyres for my track session at CSS this year. Ideally I want to just drive down and back on them to save taking an extra set of wheels, so I want something that'll manage any unexpected rain on the journey there/back (obviously if the weekend is a washout I'll just go on my PS3’s). 
Anyone got any recommendations? Been considering NS2-R's just for the price. 
I'm not looking for the grippiest tyre going, I'm only out for a bit of fun after all, but a 2hr open pit started to scrub the sidewalls of my PS3s last time I was on track so for a full on half day session I would prefer to use a proper track tyre.