Since you have 0 kids and a couple of dogs, that makes it easier. Once the family grows it gets more complicated. We started with tents (scouts) then bought a used pop-up (with A/C) which worked when they were small, then a little bigger hard side, then a ginormous 34 bunk house and finally settled on a smaller ultra-lite. Needs change, finances change, etc.
I like the idea of a used camper 2-3 years old. Have a pre-purchase performed and enjoy. If you really like the lifestyle, the next one will be new and more modern with advanced technology and less maintenance. You'll get a better idea on just how much you'll use it, where you like go (that will impact the tow vehicle and wether its an all-season or not) and how long you like to stay.
I think your on the right track in doing your home work, asking questions and going slowly. This a great forum and even an old fart like means learns something new every time I log on.
Good luck and enjoy!
