Ahh...I knew the doomsayers would arrive the minute I said 997! I did a lot of homework before I bought. Mine is a 2006 Carrera manual. This means an uprated Ims bearing from earlier models which whilst not perfect has a far lower failure rate. I had a borescope done and no bore scoring. I bought the 3.6 as this has fewer cooling and therefore bore scoring issues than the 3.8. Similarly I wanted a manual because the tiptronic can pull away in second and cause oil starvation at lower revs. I am aware of the risks and have mitigated them as far as I can, together with oil changes every six months and servicing by RPM Technik. For a ten year old car on 36k it is amazing - like new inside and outside and pulls like a steam train. The handling and steering are everything and more that I expected them to be and I'm at the bottom of the depreciation curve. I loved all three Z4's and its a real shame a E89 M wasn't produced with the M3 V8 as it would have been tempting although that said the throttle actuators fail on these - so even Bmw engines have known issues. Of the three Z4s I had I think the E86 coupe was the best although the steering could be a little unsettling - possibly not the right thing to say on the E89 forum - but it was lighter and smaller. Wish me luck with the Porsche and thanks again for all your help over the last 10 years of Z4 ownership - this is a great forum with a great bunch of helpful and learned motorists. Hizza