Many people suggest there is a clear gap between Chinese and EU/US brands in terms of quality. I think it's proven many times this is just wrong. No vendor is ideal, all major manufacturers do mistakes. One may say western companies handle problems "differently", but I'd say there is a big variation from case-to-case basis. Srsly, how problems with jitter on a 4-5-years old model can be used to extrapolate on yet-unrelease gear?
So, for me no matter where the new product comes from, only thorough reviews and can show the quality (still no protection from bad batches). So, I don't look at labels anymore, it is quite pointless nowdays (esp. with all that rebranding stuff when western companies just sell rebaged good).
Also, it looks like Chinese companies are catching up with more established brands. Let's see the market situation in 10 years...
Well, let me put it this way: hardware wise, quality is just fine. It is very good in comparison, with many recent flops from big brands, trying to compete in (to their perception) low margin part of market.
On software side, on the other hand, is a lot of room for improvement.
Problems range from software that is clumsily design (be it user interface or choice of options), generally lacking features, to simple implementation problems. All in all, functional but far from polished, easy to use and quick to accomplish tasks.. And firmware side is not worst. I personally find most Rigol products I tried, is to be honest devices that work quite well, but their PC software is simply useless...
Siglent seems to create good platforms, but rushes them to market half finished (hardware and software) and has reputation to abandon devices too soon, moving on to new ones..
I in that regard, I find Rigol to be more professional. On the other hand Siglent approach will in theory more capable device, if you're willing to wait for a year to iron out basic operation..
And I don't think 10 years.. I think it is starting this year. RIGOL's new series of RT spec analysers mentioned here are start, new series of scope based on their new chipset etc...
If they gonna attack mid range they will have to become competitive on look and feel and software side.. And support..
And they will.. And it will be interesting..