I have had both kinds, the instant popup ones and the have to set it up kind(light speed one, same as HDR link).
Instant popup ones.
PROs
-compact
-easy to store
-lightweight
-set up under a minute
-tear down under 2 minutes once you get the hang of it
-inexpensive
CONs
-small inside(5'8" 200 pounds and its cramped for showering)
-material tears easily
-UV's (sunlight) wrecks it quick if left setup
Light speed X-tra wide
PRO's
-Roomy enough for 2 people
-durable
-can use optional floor or not(included)
CONs
-more expensive initially
-bulky when packed up
-heavier
I love the lightspeed one. Setup isn't bad, maybe 5 minutes. The room is worth it for me. I think in the end, it will be cheaper than to keep buying the less expensive instant ones(for me). I currently also have the space to store it. I use a portable camping shower pump, 5 gallon bucket. The bucket fits in light speed one easily, very crowded in the instant ones.
I feel more privatcy in the lightspeed one than the instant ones. Hate having my butt up against the material in the smaller instant ones. Yes, I have used both in campgrounds. Definitely more comfortable using the bigger lightspeed one in campground because it offers more privacy(no butt hitting the walls).