Not fancy the rocco then? Or is it mkvi gti? You'd get a pretty good 911 for £30k...
not new and leased you wouldnt, and don't forget if chipping it then you could always go for the one that enables you to return it to standard and "hides" the remap from dealers etc.
Ermmm . . . . . NOTHING is hidden from the stealers! Even with Bluefin or Revo with SPS, or any of the others, the stealer will STILL know it has been remaped! 
weren't meaning that it would be totally hidden, but it wouldn't be immediate...
What is your definition of 'immediate'? Because the moment the stealer connects their VAS5051 or 5052, and scans for fault codes - it will be as clear as daylight that the car has been remaped!

they'd have to have a reason to be looking for it is what i meant,
The reason is that the car is in the stealers for work!

as the car would drive and respond electronically as normal, only if they were doing a full diagnostic would it show up.
Erm . . . they do a 'full diagnostic' on every service. And also every time it goes in for warranty issues (which are likely to store a fault code).
You really are greatly mis-informed if you think the stealer won't know about a remap!
i also suspect you could have a few of the chip remap companies for lying about the stealth of these if it isnt the case. 
Erm . . . I have NEVER stated anything about how the stealers can work out WHO has applied WHICH remap. But the stealers do NOT need to know which map has been applied. They just need to know that the original VWAG map is no longer on the chip - and will therefore know that the car's ECU has been flashed with another map. VW Germany will know EXACTLY how many times the ECU has officially been flashed - and if there are discrepancies between VW Germany, and your own ECU - then it is 'Goodnight Nurse' to any warranty on your engine!