IMO, there is no "better" or "best", there is only what YOU are willing to do, and what YOUR vehicle requires.
we towed our PT Cruiser on a dolly from Billings to Chattanooga and back. We did not experience much of what the naysayers and doomsayers tend to say.
we tow our Jeep Wrangler four down, and don't experience much of what the doomsayers and naysayers say. For instance, if anyone mentions using a fixed arm adjustable width Reese towbar ($165 at Walmart), there will be many negative comments, the first of which will be "You can't hook it to the motorhome by yourself, you WILL need help!" UMMM... Golly... I do that frequently, no problem.
Just keep in mind that there may be a huge difference between what others say can't be done, and what YOU can do!
Another "for instance" (aimed at me); if you want an inexpensive non-steering dolly, go for it. Personally, I will never own one. I want king pin steering (Demco KarKaddy, expensive) or a turn-table steering (American Car Dolly, Mastertow, etc., comparatively inexpensive).
Regardless of which way you go, there are many used ones available, often at half the price of new.
Good luck.