https://youtu.be/wZQj7TnWVNg I think a really good side by side comparison tests between the DS1104Z Plus and SDS1104X-E. Each seems to be better at different things. Rigol gets to 160mhz at -3db and 400mhz showing a signal. The Siglent is 117mhz and 140mhz bombs out. But the speed of the Siglent is much better, he says brighter screen, faster updates, but there sometimes seems some display issues on square waves (need to watch that bit again). I think when I first looked at this video I was drawn to the 400mhz thing just mentioned and memory but now I'm questioning memory especially given the responses below. Is the 400mhz thing a big positive that would sway the experts?
First, SDS1104X-E is 200MHz design. There is a SDS1204X-E. That is same hardware...
Second, SDS1104X-E has two ADC. Meaning it has minimum 500MS/s with 4ch, and 2ch with full 1 GS/s sampling rate. Compared to min 250 MS/s for DS1054Z.
Also that means that it has 2x14MPts banks. With 1 and 2 ch it has 14MPts and 7MPts 4ch.
In segmented memory mode it has much more memory, in excess of 50-60 Mpts..
Compared to DS1054Z that goes 24/12/6MPts.. No real segmented memory mode, it has recording but you cannot use it for anything..
Also SDS1104X-E has up to 500uV/div real hardware preamp and low noise input. It has color grading display.. 1MPts FFT, Bode plot II...
More decodes (CAN for instance). etc..etc..etc.
Little DS1054Z is cute little bugger that is good value for money. SDS1104X-E is a class above scope that is already at level of using it for entry level professional work.
Both are good choice, but, if you have money go for SDS1104X-E... It's just better.
I have no personal experience with GW instek 1000 series.