I have them on my Glendales, not done more than 50 miles tho so cant really say what they are like,although i had them on my previous ed30 in 235/35/19 on bbs ch, and if that was anything to go by they transformed it, so much more grip and steering composure, turned where you expected it to go if you get my meaning, absorbed the bumps better too, took away the vent creak.
I have also had them on the scales, glendale with 225/35 Dunlop was 21.8kg and a glen with same size SS is 21.2kg.
I have owned GY ASY2 on a previous ed30 and to be honest imo they were decent mid range tyres, nothing outstanding if one didn't factor in the price, but for not alot of dough they are superb.
Hope this hasn't been too of a useless waffle...

P.s. another tyre to consider in Dunlop sport maxx RT, a customer of mine who races karts has them on his merc amg, rekons they are marvelous, best tyres he's owned.