I've just moved over from a set of NS2R in 180, to a set of AD08R.
Nothing really wrong with the NS2R, not great in the wet, but not really bad either. I did do a track day with them last month, and noticed a decent jump in grip levels once they had a few laps on them. Ended the day having spent £100 on fuel, so did a good amount of laps and stopped out for about 45 minutes at one point, but was doing a slow lap every 4-5 laps to keep the brakes cool. No melting, and probably lost less than 2mm of thread i reckon. Maybe the coldish weather helped though.
Now on AD08R, done about 500 road miles on them in the last week and a half, weather hasn't been that great. but I have noticed they're better in the wet, and they have better traction when pulling out of slow corners. The NS2R tended to break traction much easier, possibly due to need a little heat in them to get the best out of them.
I wouldn't not buy the NS2R again, but given i'm running 195/50/15 now, AD08R only cost about £220-240 for a full set, so it's not really worth the saving. Will see how they get on at the next track day i do next year.