I take it this is for a vacation? Are you looking to buy or rent?
If buy, check out
www.buysell.com for a decent selection of used RVs.
Ford, Dodge and GM/Chevy are the only full size trucks we have. They are all pretty decent for hauling a camper, but like any vehicle, the previous owner's maintenance of it makes the biggest difference. If you are hauling a camper, get a Heavy Duty 3/4 or One ton. 1/2 tons just do not have the hualing capacity.
Camper wise, they are all similar, but find one that suits you. Most have a furnace, stove and 3-way fridge.
If you are just renting, you are limited to what the rental companies have.
Good luck
Wes