Asking an open question like that you'll get a recommendation for every dolly.
We use the Acme EZ-Tow dolly. Just returned from a 1500 mile trip using it without issue. Its "lightweight", easy to move around by hand, has surge brakes (no brake controller necessary). Have been using it to tow 4 different vehicles in the past 4 years (have around 10,000 miles towing with it).
Here it is towing our Bolt: