Firstly, sorry for taking you thread a wee bit off topic Joe

Robin, fair enough about the ESP being "smart" i did wonder whether it may be an active system.
I'm not saying a cars suspension set up cant be improved but on a road car it nearly always results in an undesirable compromise, but most people dont accept it since they've just spend a heap of cash on coilovers etc they wont want to admit it's had a negative effect on some aspect of the cars handling.
Building a "race" car and a fast road car are two entirely different subjects. Making a car go fast on a circuit is one thing but making it able to cope with just about every different road condition possible takes a bit more work, therefor i find it hard to believe you can make improvements across the board without having a negative effect somewhere.
I accept that VW made compromises when designing the Mk5 suspension, every manufacturer does, it's just a question of getting the right balance between comfort, grip and safety which i personally feel they got spot on.
There may well be circa 40% head room built into some of the components, i've heard this one mentioned about the engine, but you cant apply the same statement to the suspension.
I used to be one for re-mapping cars, fitting different suspension and not cheap junk, i've used Eibach, Bilstein, Leda and the usual ones, Koni and Spax. Having spent years doing this i've finally woken up and realised i was wasting my time, it didnt result in a better car just a different one that you could say had x,y & z fitted to it.
I bought this car because it was highly regarded as being one of the best fun hot hatches in a long long time, and that it is! Who am i to think i know better than VW? This could go on forever, there's always going to be people who want to change things and thats what keeps the aftermarket industry going, but for me personally i've had enough of it.
Kenny