Diablos are for being naughty in. Build quality has improved - but it's not the best in the world. Same can be said for Ferrari - I've had a 550 - and after hard use - it complains heavily!
My previous 98 SV was loud, quick and fun. I did over 10,000Kms in it in sun, rain, snow, hail - no problems. You HAVE to use them to keep all the parts working correctly.
Just picked up a new 2001 model - 2 WD as opposed to the VT - 550bhp and understeering is not allowed!
Build quality much better - but not perfect. But hey - who cares?!!!!