I would only
buy a GC with QL. Period. It's what gets the Jeep into the same league as the air suspension-equipped LR4 and Touareg. Both are unit-body on frame designs that perform extremely well off-road while providing on-road performance and comfort.
The ride is noticeably different between a steel and air-sprung GC. Anyone who says differently has clearly not driven both for an extended period of time. I have. In fact, there are multiple reviews at your disposal on this site stating the same.
If you want a high wagon, get the Laredo. If you want something a lot better, skip the Limited and get the Overland. Less boxes to "tick" and you get everything that costs more across the street at the competition.
My two cents.