While I can offer no comment on the Hantek, I can say I have sold several dozen CNL/CML in the NZ market with NO failures, no warranty issues.....nil problems. 
If you are looking at lower cost DSO's you can be confident with a Siglent SDS1102CML. 
I have same experience with fresh versions of CNL/CML. mainly SDS1102CML/CNL and 1072CML/CNL.
I have also tested with 48h burn in + check/test every unit before sell. Problems zero.
After sales, not yet meet any warranty time failure in main unit.
Probes: In my tests after arrive one bad probe after I start also check these. I have meet one after sales warranty issue with broken probe (before I start check every probe)
Siglent have real dual timebase when use ALT trigger mode. Both traces can use different t/div setting (this is rare in this scope class).
Front of TFT surface is real glass. Fan is quite silent and overall building quality and construction is good. (of course related to price)
Hantek. Previously I sold Hantek before I find too many warranty fail issues and stop (5000B models). One time it was so terrible that nearly 40% of arrived scopes have problem/fail. Also units what have no issue in my burn in test have failed (and warranty repaired) after sales, but only 4 cases. After this all hassle I stop selling Hantek.
But this happend long time ago (mainly 2011-2012). It was one very sad HW version previously. Today
this very sad HW is only history and I believe these problems have solved.