Decided to STICK with sportline. Thanks everyone for the contribution! I think the sport seats really were the deciding factor. I wanted to get back into a 6 speed manual, BMW. If I didnt get sport seats, and the nice black headliner, I think I might have regretted the puchase slightly.
What I find difficult is BMW doesn't give you everything you want in each line, but when you do find the right compromises, it can turn out okay. A year looking at this car, I finally grasped a look I really want.
When the M3 comes out, i think it will be love at first sight. Except no issues with options, colors or even performance (rwd is it).