The 18 max XL units are left over from special use vehicles that weren't picked up. Basically police and government vehicles meant to be upfitted that were never sold. They are farmed to the dealers for a song. The dealer "punches" the truck as sold and then is obligated to hold the unit for x months. They can then sell the truck as used. We have an 18 XL and it's exactly what we were looking for.
Quick question. Does the XL come with the small mirror in the upper left corner of the regular side mirror to check your blind spot? I don't think the XL has the blind spot monitoring system.
I rented a 19 limited and when I looked over my left should to clear the blind spot I couldn't see past the pillar and had to depend on the blind spot monitoring (which I hate to do as I've done the look back method for over 3 decades especially on my motorcycle).
Anyway my 17 XLT is easy to look back and see the blindspot but also has the small mirror which works surprisingly well. The tiny mirror is also useful when pulling forward into a parking spot to see where the white line is behind the truck instead of putting it in revers to activate the camera to see if the rear is over the line. LOL