... the really cheap, mass produced stuff seems to be of a lesser problem nowadays because the seem to have got the bugs out by now (DP832,DSA815,DG1000Z,MSO1000Z).
The problems start with stuff that is not all that cheap anymore (DSG815/830,DSG3060IQ,M300, ...) and where they claim that they can play with the big boys.
They cant, and pro users will not tolerate silly bugs or bad service. The price difference from them to a (rebated) Keysight is simply to small, IMHO.