Thanks for feedback guys. I'm not afraid to turn my own wrench - Have a '69 911T that I keep up myself (hence the user handle) - but would also be using this car daily and thus can't get too deep into the weeds on a project that will leave me stranded, so I'm leaning towards a six cylinder version instead of the 8.

Generally from what I've seen v8s are cheaper than the 6s obviously due to higher all in cost on maintenance there.

From being on the various 3 series forums, a lot of those folks warn against the 335d engine but it seems like people on the X forums really favor the X35d - but both use the M57 engine, correct?