Smaller ones are indeed better.
Along as they aren’t sized for go carts.
I was put in a horrible situation. It was a totally dark night and pouring down rain and I was approaching a 3 lane roundabout at a huge intersection that I did not know was there.
There was a truck to the right of me so I did not see the sign that I was approaching a roundabout and I missed seeing what lane to be in for exiting the roundabout.
Luckily I made it out alive.
I think the huge roundabouts are a mistake. They need to be well marked with plenty of signs and lights prior to approach. Some people may be from out of town and don’t even know or expect a roundabout to be there.