Basically there are 3 main makers of clutches, sachs (O.E.) ,LUK, and valeo. you want a sachs one.
LUK ones are naff, as i find they are not very well made, and tend to end up being redundant in no time whatsoever, i remember a few people off here fitting them and then a few months later complaining that the clutch was fooked again. Sachs ones i have never heard a bad thing about.
Gem, pm the details of your motor to me and i will do some hunting tomorrow, see what the best prices are i can find.
I.E. engine size, year, etc all that stuff.