I would love to have the SDL. The amount of leg space out back is significant, even though I think it is only 2" more than the SD. Ended up with the POS SDL for the legroom.
The extra 5.5" of wheelbase is all in the rear footwell, and is a pretty serious addition to legroom back there. About like what you get by running the front seats up all the way, but without the need for Munchkin driver and shotgun occupants. And _with_ the passenger seat all the way forward it makes quite a playpen in back, for those waiting-for-SWMBA moments in parking lots. -- Jim