heard good things about the khumo's
fk452's some like them some don't, on the heavier car maybe not a sgood, but i run them on my s2k and they work very well, not had any issues with them. don't forget size and profiel will also make a difference to a tyres performance compared from one car to another.
vredestein ultrac sessantas are good.
PS2's are good but very expensive. perosnally i'd rather buy new tyres than 2nd hand ones as you don't know how old the rubber is (tyres should be changed at 3 years or when they get near the wear bar). or how many punctures its had and that have been repaired, and by who or how well. (no comeback if it was a crap job and your tyre explodes at 70 on the motorway.) also if they are illegal repairs and been done anyway even if they are too close to the side wall etc.