i had the tilton triple and the exedy triple metallic. i personally like the triple metallic exedy better (believe it or not). the tilton was amazing no doubt... but i felt the exedy held up better for abuse and daily driving. also it's uneasy in my mind knowing i'm wearing out a $4000 clutch. lol
the exedy has a VERY short engagement point... so it was harder to launch it... first time at the track i was able to cut 1.7-1.8 60' times but i felt that if i upped the 2 step and launched harder, i could have easily cut 1.4-1.5's with out a problem. so it's definitely possible to launch well on the exedy. you just have to slip it carefully when you find your engagement point so it won't bog so easily.
i'd say for the money, if you're tight and find a good deal on the exedy triple disk, go with that one that's just my personal thoughts and experience