It's really a little unfair to keep referring to the Rigol as "50Mhz/100Mhz hack" because the scope is actually pretty much a 130 MHz scope that is disabled in the factory to reduce its effective bandwidth to 50 MHz. Removing this restriction using the established procedure is hardly a "hack".
It's also pretty funny for me to see people saying the scope can't do certain things (like a reasonable FFT) when I demonstrated it in the scopeshots video above.
And of course we once again see complaints about the fan noise and the non-detented encoder. I also bought a quiet fan when I first bought my scope, based on all the things people said about the fan noise-- and I still haven't installed it, because the scope is not that noisy after all. And I have never had any trouble selecting anything on the scope due to some kind of encoder difficulty or lack of detents. It's just not worth the trouble to me to replace an encoder when operating the stock encoder isn't an actual problem. But then I have "Mooney Mechanics" hands, your mileage may vary.
One valid criticism I have seen in this thread re the Rigol 1054z is that it shares one set of vertical controls among the 4 channels. This could be confusing to a beginner, but again, half an hour actually using the scope to probe some example circuits and you will have that "feature" down pat.
My feeling is that if you only have one tool, but you do many jobs, it is better to have your tool be a general purpose one that does many different things. Perhaps such a tool makes certain compromises and doesn't do _everything_ as well as a dedicated speciality tool does for a particular task. If you really need a full featured FFT, get a spectrum analyzer. If you need to decode digital protocols all the time, get a dedicated protocol analyzer. If you absolutely need high bandwidth, you will want something that costs as much as a new car or maybe even a house.
But if you are a hobbyist, fixing random audio gear and maybe moving on to experimenting with TTL, or RF in the 10 meter band , and intend to advance further, you should get a multipurpose tool as a beginner, that will still be useful when you are more advanced.
One thing I really like about the Rigol is the wide choice of channel attenuations, since I often monitor current through odd or arbitrary value resistive elements. It's great to be able to set up the scope and probe to give a correct current reading by setting the attenuations appropriately. I imagine this should be true of the Siglents, too, but I've not used one.
Oh... one more thing.... A 100x probe does not cost 10x more than a 10x probe! And they have no switches!
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