I have 108kmiles with the original stock clutch, and I've had over 300whp+ since.. well over 50kmiles. Sounds like abuse or poor clutch technique.
I have two friends, both had to change their clutches at 30ish k. One was modded, the other was stock. The modded friend, well, he abused the car. Drove like a teenage kid getting a fast car for the first time (and he was at the time). Stock friend (RS).. he didn't know how to drive standard very well. Revved it up to 4k before engaging with massive slippage everywhere he went.
Stick with stock (or equiv) unless you plan on upgrading a lot later.
"We live for a good time, not a long time."
RIP Colin McRae