I've used the ACME EZE-TOW dolly since I got my motorhome. Once you get the basics down it's not a crazy setup. I tow my Prius. After reading about what is called "death wobble" I don't know that I'll bother with 4 down towing.
Good product. Finding a used one would be ideal, but they get a good price when you but it used. If you buy it new you've got the 5 year warranty and they are very responsive to new or used owners when it comes to the questions.
Just watch your tire pressure. I had a tire fail and it was likely due to low pressure. I've since installed a TPMS with 10 sensors to keep an eye on all my road contacting tires.