Curious how owners would rate the new X5 for comfort on long drives? Love my 335i but my knees are sore and stiff after about 1.5 hours. Just turned in our A8 off lease which was no fun to drive but did last a little longer on my knees. Maybe this is just turning 50 and there is no solution but more frequent stops?

On a 10 scale, how would those who have tried/owned both cars rate the new X5 with sport package in fun to drive compared to the 335i? I would rate the 335i as an 8.7-8.8 leaving higher ratings for the M and other cars.

I have trouble with fit so most cars don't work for me-like the 5 series. Other than the 3's, the two cars that fit me best are the new S550 and the X5. Different species to be sure but am also interested in any thoughts or advice from those who have similar issues or experience with these vehicles. I am looking to have two cars that satisfy me on a daily basis and on 8 hour trips.