I rented when we first started, and it worked, until we started visiting places off the beaten path. The western and eastern Sierra's are vast and we found ourselves having to reserve a rental and pick it up, and the DW would follow me in it, sometimes hours from our destination because there was no other place to grab a rental. After that happened a few times, I set up my old TV, 4 down, and we now bring it with us.
Now that I have one that can be towed 4 down, I will always tow 4 down and pass up the rental due to the convenience. If I had to dolly it, I would probably prefer the dolly over the rental, it is just easier when you already have it to go when and where you need to.
