See updated pics at the bottom of new CF splitters attached at the weekend! 
And I got round to de-badging it too - definately made the back look alot cleaner!
Well....I had to do something to keep me occupied on a bank holiday weekend! 
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So after much deliberation, I finally went ahead and bought the CSL's. Missed out on the group buy from Mark @ BMAutosport because I was waiting to buy them from a supplier over here, but no suppliers were able to get me concave rear CSL's - so I had to go back to Mark (post-group-buy) and get them sorted.
Great guy - very helpful and efficient, couldn't do enough for me.
Went for the more aggresive rear et27's in the end - took a gamble, and im glad to say it paid off - no issues with fitment/rubbing at all! Fronts are et38.
Tyre fitment 235/35/19 front and 265/30/19 rear.
Other mods so far have been blackline tailights, M3 lip spoiler, and chrome grill, and tail-pipe fitted to the exhaust.
Have front CF splitters sitting here as well, just havent got round to fitting them yet!
I know the 19's push the ride height up a fair bit, but I refuse to lower the car given the shape of the roads around here and the number of miles I do weekly! - it just isnt worth it!
P.S. - apologies for the image size - due to a lack of knowledge/laziness I didnt get them resized..i'll know for again!..
Thanks for looking,
Tom