Depending on our route and destination, we either flat tow our little Ranger or dolly tow our Camry.
For us it is a wash as to which is more convenient and/or easy to use. Yes, I believe a dolly should have brakes. There have been occasions where we needed all the stopping assistance we could find.
We run an Acme Eze Tow with surge brakes. Integral lights. Can't argue surge vs electric. Just prefer surge. One less electric connection to worry about.
I too like the tongue pin to override the surge brake. Backing a loaded dolly is beyond my skills, but backing an empty dolly is doable. And, I've learned while descending steep grades such as Arizona's Salt River Canyon, to pin out the dolly brakes and let the rig's compression brake take the load. Reduces the overheat tendency as the dolly brakes engage, disengage, and drag around steep downhill curves. (Likely some argument out there over that
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