I have an opportunity to buy an 6MT E91, and I'm debating selling the 4.6is. Not sure how much I can get for it--I just put about $3,000 of maintenance into it. I originally bought the car to tow my M3 around to track days, but I don't think I'll be building the M3 into as hardcore a track car as I originally intended. It'll still be drivable on the streets, and it seems like it'll be easy to keep it registered in Illinois as a street car (car and I are originally from California).
As comfortable as the X5 is, I've realized a RWD wagon is a lot more fun year-round. I've been driving my girlfriend's E30 325is around in the snow, and it is more than capable with some Blizzaks on it. The E91 will provide 95% of the utility of the X5 with a much higher fun factor. Plus the fact that it was likely the last manual, RWD wagon with hydraulic steering that will have been offered in the US, I feel like I need to jump on it quick!
I have the car listed up in a couple of places... but maybe one of you guys can talk me off the ledge