I´m with you.
I had my rigol 5074 for over one year, was one of the first owners.
Before, I was a rigol "fan" since the DS1000Z cames up.
Liked the full packed features.
Was happy as the 5000 cames up, for me the true heritage of the DS1000Z.
But month goes by….
In this time I was nearly every week in contact with the rigol eu support.
And they gave me all the support they could, very nice.
But at the end..
Only one official fw update, next update is delaying for months.
Should launched in may 2019, now we got february 2020.
And then I took a very low noise measurement and must find out, the rigol couldn´t really handle this.
At the same time, the siglent 2K+ cames up.
"Only" 2GSa/s...hm-hm..
But otherwise…
It was a spontaneous decision, I´ve sold my rigol, put some bucks additional and ordered the siglent.
Less samplerate, less features - But I don´t regret it until today.