Great looking rigs....all.
I pulled the trigger on an ARE V series with the required options (Carpet liner, Win-doors, dual rope light and sliding front window). I went with the cab high for a few reasons
1) The mileage on the power wagons is already less than awesome.
2) The MX costs about $500 more
3) My truck is already ~6'6" high and am concerned about anything higher for garages and what not
4) I am going to put racks on it so in reality, we are talking about a 10-12" higher than cab height
If I really hate it, I might give the EZ Topper lift a try. EZ Topper lift + Cab height topper really seems like the best of all worlds. I'm not worried about not having enough room as that was never an issue even with the 5"7" bed on my prior truck and cab high topper.