I made the decision to order a '13 S4 and pick it up in Germany this summer. I won't have room in my garage to keep the MSP unless I can convince my wife to drive it and get rid of her POS Impala, but I just don't see it happening. Not sure when I will put her up for sale, but whoever gets it will get a very rare and very loved and cared for MSP.
I know exactly how you feel Rick. I've still got my MSII, the JimStim and an oscilliscope laid out on my work bench, and I am wondering how far to go with the parts and projects I have left. I have a beautiful SS mid pipe that I can't keep from occasionally hitting my crossmember and subframe, and by my phone's accelerometer didn't even add a fraction of a horsepower, that has now been taking up space in my garage for months. I have a hot pipe that I was going to use as an experiment to get rid of the occasional hiccup on abrupt lift throttle that the car has done since new. I had it powder coated to look SEMA worthy, along with a valve cover that I then polished for an entire Saturday that even the PC shop was impressed by. Then of course, there is the MS flywheel and clutch I was going to replace mine with when I presumably outpowered the stock setup, but honestly, even my fairly sticky RE-760's are no match for the current clutch which shows no signs of wear. It would be a waste to install them.
I think I'll get as much done as I can in the next 6 months or so, just so I don't feel like I wasted all of this work, but the MSP will be 10 years old this year. It's time to move on, I just dread some kid destroying it with big subs in the trunk, CF hoods, ebay racing seats, chrome wiper blades, etc. It has to find a good home, someone who doesn't mind tightening down my ARP exhaust manifold bolts every 6 months since even threadlocker doesn't really help. Someone who knows what wax and armor-all is, and someone who will appreciate the amazing handling this car has that makes me choose it over my C6 every day for my drive to work.