ive recently be using toyo R1R's, and are would be a fantastic hill climb tyre, they also go alright at the track too.
on the street they are fantastic and stupidly grippy (i mean stupidly grippy, like you can dive in to corners much faster than you think) when ive been on a few spirited drives. had them at MDTC as well and they were stupid grippy there too, had a few slides but that was because of the bumps on the track (if you've been there you'll understand).
ive also found them very progressive when they let go too. one of the guys i work with runs R888's on his mx5 and loves them, they provide a large amount of grip and he usually get a 3-4 track days out of them.
R1R's and adrenalins on 205/50 15's are about the same price. also R888 in 195 and 205 are about the same price.