Tutu Express used it once, and felt that the service quality was not good. The waiter ignored it and was a little unhappy.
Shentong is cheap, but it doesn't protect the express mail well, and it is often poorly packaged. It seems that the management is not very good. Sometimes an express can be sent 10 days, which I can't afford, but many businessmen use this because it is cheap.
Others, like the MRT, are relatively small and feel ordinary.