with a limited supply and a learning curve the more models you can look at- even if not so interested, the better you will be able to decide what you like
we looked at probably 30 units in person- some we walked in and turned right around ( and took notes) some we kinda liked this or that ( and took notes) when we walked into the one we bought we knew right away it fit the bill.
winning aspects- largest bed we could find, solid maple cabinetry/ quality of craftsmanship/brands, gas chev i can work on
units which were too far, I looked at youtube of same/similar model- watch how easily ( or not!) the sales person moves around the van- watch for having to "move this" to "access that"....on a rainy day with other people or a dog underfoot that'll take the fun out.
you are shopping closer to SD then ?
1 craigslist tip- search with popular mis-spellings
Road Trek is often listed as Road Trak...my seller ran an ad for 3 months with a mis-spelling which made it not come up in search results
a quick look shows a a few small rv's incl a sportsmobile popup ( no toilet in these)
cheers, Mike