Think Mike has pretty much covered it all tbh
As much as I loved the ED30, this is a totally different car in every respect.. RWD is definitely more fun, although I am far from getting the car near it's limits. As Mike says, you really need to learn how to drive these cars before poking them with a stick. But that is all part of the fun imo..
Mine has the newer single turbo engine and I have averaged, near as makes no difference, 30mpg over the last 10k. That's with a lot of motorway mileage, mixed with wringing it's neck when not cruising. On a run I normally manage anywhere between 34-39mpg (mapped)
BMWP parts are lush, but expect to dig deep into your wallet. I have just settled for the CF spoiler and front grills for now. But can see me adding a few other bits at some point.
But the best bit of the car for me has to be the noise of the thing. You would never believe it still has a stock exhaust. Especially when starting it in the morning..
Oh and Mat loves them too...