I chatted with Amber many months ago but nothing recent as I'm still in research phase and didn't want to waste time for quotes if I'm not set
I like the medium height appearance a lot more than the high top. For context Im deciding between a tufport topper and the medium CCV pop top. Two different interior functionalities I know, but both will work for our family so it comes down to things like appearance
I have the medium top and prefer it to the high top for a few reasons:
-Overall lower profile. My van is 8' 10" tall with the medium height roof - would not want to go taller.
-Much better looks. Looks like a standard high-top van, not some goofy contraption rolling down the road.
-Same amount of useable space with the top up.
If you need the additional storage, the full height top is preferred. I have just enough room for a 3.5" mattress, light bedding (fleece blanket and sheets) where I can leave the bed made up with the roof down but pillows have to be stored in a stuff sack or on the shelf ahead of the roof opening.
if you wanted a thicker mattress or to be able to travel with the bed completely made up with thicker bedding I would go with the full height roof.
Only other advantage to the full height roof is if you are under 5' 6" or so you can stand up fully in the van with the roof down.
My van is the "mid-cut" version, leaving the OEM headliner over the rear bench, with just the front cutout in place. I am not sure if that version or the "full cut" version would be better. I dont know if having any more walking around room with the roof up would be beneficial, since you need a spot to store the bed floor regardless.