Thanks for the comments, I think the comment regarding I thinks its probably a bit quicker than the Gti has to be balanced with the fact it (M135i) only still had about 200 or so miles on it and I was trying to not be too hard on it until I had got a few miles on the clock.
Its now got around 600 (essential obviously!) miles on it and it feels like its loosening up nicely the exhaust note is starting to deepen up a bit, as others have commented its very grunty from low down and very very quick. You dont have to rev it out to go really quick really quickly!
The chassis/ handling is really stiff and has a real "point and shoot" quality to it- its absolutely like its on rails.It still manages to retain a comfortable ride in sensible use though- even though mine is on 19"s with no adaptive suspension.
The brakes are superb and scrub speed in a rapid but very controlled fashion.
The 8 speed box is good and I cant really notice any difference between it and the DSG in the Golf. There is still sometimes that milli second of lag built into the accelerator especially in comfort mode as on the Golf but in sport it all but disappears and you start to notice it less and less as you drive it.
The interior is great, no creaks or rattles at all that I have noticed up to now and its a great place to sit. The tech, nav and even the speech control are good and pretty easy to use. Ill be glad when the android update happens though.
Head up display is fantastic and so easy to glance at without really taking your eyes off the road.
I think I didn't at first realise how fast it really is, in a race between this and my Gti I know where I would place my money.....