Frankly, sold the 99", mainly because I got a solid offer. I wouldn't have, otherwise. It was in awesome condition, lower miles, and I had done all the PM.
Looked at cars for 3 days, and missed the LX already. Jumped on the 03" when I saw it. Great previous owner, 2" of records, and while it hadn't been worked on for a few years, great shape.
While I didn't go into it wanting the 03+, I must say, the 5 speed makes a larger difference than I had anticipated. I find it is much smoother, and I am really enjoying it. I also like having steering wheel controls, although that isn't a big deal.
Really, there is no reason to move to the 03+, but they are subtle improvements that are nice to have.
The new 03" hood was shaking on the highway, too, so I adjusted the bumpers to create more tension. So far it seems good, but time will tell.