As I said before, it remains to see how successful they were in achieving targets.
But to belittle huge effort it took to develop all this, it's just bad form.
These guys did huge techonological leap compared to what was state of the art for Chinese companies, only year ago.
As a customer I don't care about whether it is a big achievement or not. For about the same money I can buy 10 bit with true 500uV/div and similar memory depths from R&S. With the information available it seems Rigol is where Keysight was 15 years ago. The way I see it Rigol really needs to drop the price otherwise this MSO7000 won't sell at all.
As a customer, I didn't run and buy one. I DO expect teething problems. But not because they are "stupid chinese", but because it is something so new it has to have problems. R&S you mentioned came out with a new platform at beginning of the last year. It still has many bugs, albeit they are less and less serious with time. Most stable are Keysight 3000 series, but just because they are 10 years old....
And R&S has 10 bit and lower noise, higher sensitivity inputs.. But has it's own shortcomings and much lower update rate. Actually, all the arguments that you mentioned are valid for Keysight x3000T/4000 series. It has same same spec front end.
Except basic DS7000 have 25x more acquisition memory.
So if you need 10 bit, high sensitivity (power measurements for instance) you are better off with R&S 3000 than with Keysight 3000. Or DS7000.
But compared to dsox3000T, hardware capabilities wise, DS7000 makes Megazoom4 look , well, retarded. 4MS memory is just funny. And I know 1 milion wfms/sec is more than 600000 but it is not relevant. But 600000 vs 60000 (R&S) is something you might notice. Or not.
DS7000 series is like something between Keysight 3000 and 4000, because of screen in between. Hardware specs are obviously inspired by fast waveform rate of dsox3000 and also by users criticising it for very small memory. They also implemented Tektronix measurement logic, with full buffer measurements (3000T decimates. although quite well), histograms, large 1Mpoint FFT that has better interface (you can set start and stop, or center span frequency). Measurements are architecturally better than dsox3000, and on some measurement it shows. Not to mention severe aliasing that happens on Keysight as soon as you slow down timebase a little.. On certain timebases and setting you will have better results with DS1000Z than with 10 times more expensive Keysight 3000T
It has two channels of AWG (like KS 4000) , which has also one feature I like : while generating signal you can mix in and add separately controlled noise .
It has segmented memory (for free not a 1000€ option like R&S), search...
It has potential. If there will be problems they will be because it seems to be complex and sophisticated instrument. Those are hard to debug and if there are problems they will be because of that.
And pricing is quite funny. Lower freq (100, 200) are good price. With full app bundle you get it for much less than big names. but jump from 200MHz to 350 MHz is allmost 3000€ more... 200 to 500 MHZ is 5000€ more. I would sell for 1000€ per 100MHz, and not sell 100MHz version at all. 200MHz -2000 €, 350 MHz -3500 €, 500 MHz -5000€. MSO for a bit more, let's say 800€. And all options included. That would sell like cakes. Off course, if it works well.
But if it doesn't sell, they will adjust prices. Or maybe it will prove to be good enough to make problems for big guys.
DS4000 was good basic scope. Fast but only basic features. This one is not like that. It has all the good stuff from Keysight 3000 (fast) and Tektronix 3000 (better measurements) AWG from Keysight 4000, hardware decoding....... If it all works well, it is going to be interesting.
And then either premium manufacturers have to actually pump out really better products and keep price ranges, or drop prices.
In which case 2nd tier manufacturers have to do same... Good for consumers..
We will see who blinks first...
And, again, all that will be more interesting if someone unlocks ds7000. Or if Rigol gets smart and just sels fully unlocked scopes in few frequencies and with/without MSO. Or maybe Siglent does that, so Rigol will follow.