Ive ran my X11 for about 3 years now, its a good solid car, a couple of weak points but what car doesnt have these! I found the front hubs to be my weak spot, but other than that pretty bullet proof!
From a personal point of view, i found the car better when i was aggressive with it, the more i pushed the better it was/is... Dont be affraid to give it "the beans"
Theres plenty of help and info about the car on here, and dont forget:
www.the-pred.co.uk which is packed full of setup and modification tips!
Hope this helps, and i hope you enjoy it when you get yours...
One last thing, take your time building it, dont rush it trying to get it completed, as Stu said, a well built pred will be a reliable pred...
Enjoy!!
Tom