At the risk of being branded a philistine, not all Chinese power supplies are completely useless or disposable. I bought one of the early Korad KA3305P units and have been quite satisfied with it. Effectively 3 power supplies in 1, and the two variable 31V, 5.1A outlets can be chained in series or parallel with the push of a button. IE: it can deliver 62V @ 5.1A or 31V @10.2A.
I did a tear down at the time, which can be seen here:
