I had Carlisle ST tires that blew out at less than 2 years and 8,000 miles, so I would wonder about the validity of a survey that showed them having "the highest satisfaction rating there is in trailer tires in this size". 
I've compared the Carlisle ST tire, and the Sailun LT tire, and there is absolutely no comparison in sidewall stiffness. The Carlisle feels like wet cardboard compared to the Sailun. 
IMO there is a good reason the Carlisle is so cheap. They may be adequate on a lighter trailer, but there is no way I would ever put them on a heavy, tall trailer.