Great advantage of a teardrop rental is that there is far less to abuse than with other RV rentals.
Seriously, many years ago I was "briefly" considering getting a pop up. Our local Starcraft dealer rents out about a dozen of these things every year and then sells them used... (1 year old.) Man, I cannot describe to you the sheer funk inside and abuse those things took in just one year. Who knows what folks were doing in there?
BUT, they had tons of fabric to funk up with the seat cushions and curtains, plastic windows, and the entire mechanical canvas pop top was just a mess and most wouldn't even crank up right, the beds were shot from mildew (and a lot more probably). You just know people were folding everthing up wet after a rain. You got porta potti's not being dumped right, burnt food in the stoves and screen doors not shutting right... etc. ugh
You don't have all the crap with a teardrop. You have a mattress - which you will chuck anyway if you ever decide to sell your fleet used. And I totally agree, keep it simple with something like Little Guy Teardrops - I wouldn't even do electrical.
Good luck.
Scott G.