SHA--HEEB, I've been on the 2.5 UST Highrollers for over 6 months now and so far I'm very pleased. They're mounted to Mavic 823's and I run em' tubeless. I cannot say enough about the tough sidwalls - very pleased after I switched off the paper thin Kendas.
I've also mounted up a 2.5 UST Minion (FS) which I've got some hours on now as well - so far it's a nice tire on the front.
They weigh in at appx 1300g per tire and it's humbling on the climbs but well worth it IMO.
It appears that the going price is appx. $40-50, share some info if you find em' for less...