I really prefer the coil springs and won't be putting in a slide in camper, I am going with the Habitat. But you are right if I was going those routes it would be better with leaf springs.
I have had my Ram 2500 since ‘12 and love it. It’s really a great truck . That said I bought it and a Northstar 850 Popup camper. It would have been a great match. I never even picked up the Northstar due to a domestic disagreement, and later ended up with my Alaskan project. I totally overbuilt the Alaskan(intentionally) and it and all my stuff maxes out the Ram. It rides great and is legal and safe, but I would love to throw a flat bed and sideboxes(and associated stuff) on the 2500, which would put me over unless I was methodical with what went where, and I would love to have the freedom to stuff it to the gills without much thought(the extra 1500# payload of a 3500)
The point of the reply is this. I am beginning to think ( and have ignored other people saying the same previously) that the 250/2500 class is useless to 95% of people. (You may be in the 5% if you need a HD truck with coils)
With a 2500 you lose the ride and gas mileage of a 1500 ( I got over 20 mpg with my ‘10 1500 crew 4x4 crew on the highway)
You also lose the big payload (and associated harsh empty ride) of a 3500.
If you truly plan to stick with the habitat, then you are making a great choice, just understand that changing your mind later to a truck camper is expensive if you need another truck and the camper too.
My 10 cents
Edit. My ‘10 was a 4.7 V8 not the hemi
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