I've seen a few reviews of these "fnisi" things and I find it appalling. (The fnirsi, not the reviews).
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Decent scopes start at around EUR250.
With respect though, that is nearly double the price of the FNIRSI.
I have an OWON that I use at work which cost close to £400 five years ago and it is worse in every single way to the FNIRSI. Not only is the user interface worse, it takes in advance of 60 seconds to start, it constantly needs the self-calibration running, the display isn't as bight and any measurements are laid over part of the (much smaller) screen. Worse still is that if you move the trigger point to view more of the waveform on the OWON if you change the horizontal timebase the trigger point moves relative to the timebase making the trigger point move right off the screen and somewhere into last/next week.
I too have used some very high end oscilloscopes, I have worked in the technical department for a Technical College, for a company that manufactured measuring equipment in the aerospace and oil extraction industries and for consumer electronics companies, I'm now working for a small company where money is restricted for test equipment and so bought the OWON, I wish I'd had the chance then to buy the FNIRSI. I don't seek to claim that Hameg should be worried by FNIRSI, the two are polar opposites, but for the life of me I can't understand the snobbery towards FNIRSI.
It is a superb little oscilloscope and function generator, bought with realistic expectations I doubt you would be disappointed. Yes, I'd love a Hameg at home like I used to work with, but I can't justify the expense for something I'll use only a few times a year. I would also like to justify replacing the OWON with a FNIRSI, it would save me pulling my hair out quite as often.