I was very happy with a Reese fixed arm A-frame towbar on my Jeeps for many years.
Then, because I needed more than 5000 lbs. capacity, I got a used Roadmaster Stowmaster 6000 lb. capacity telescoping arm unit. Other than the added capacity and the fact that it folds up on the front of the truck, I am not impressed. In fact, I use it just like it was a fixed arm unit. It is easier that way, for me. But, I bought it, and the truck is set up to use it, so I'm stuck with it. It works, that's all that is necessary.
IMO, there quite simply is no "best"! there is only what each individual likes.
Good luck in finding one that YOU like!