Your experience with a Dually vs SRW hauling 5ver

I've had both. Last year we were on the interstate and my wife was driving the dually towing our toy hauler. She heard a rumbling and pulled onto to the should. Turns out the inner dually had gone flat. A quick change and we were back on the road. I can only imagine how it would have turned out if we were in a SWR. So, from a safety point of view I prefer the dually.