since when is 30% "Not much more expensive" ??
I don't remember the exact number but the Rigol was about the same price as the 1104 when it first came out. I remember paying somewhere close to $500. And for the features, I got a heck of a deal!
The question is: Given the price is 30% higher, is there something with the display and interface (notably the delay in the Rigol controls) or the potentially higher bandwidth worth the difference. If there isn't, the DS1054Z is the way to go. OTOH, if something with better controls and higher bandwidth is worth the upgraded price, maybe the 1104 is the way to go. There are discussions over in the Test Equipment forum.
I will say this, I am seriously considering adding the 1104 (upgraded to 200 MHz) or the 1204 to my bench even though I already have the DS1054Z.
Side note: The 1104 is priced above the 100 MHz (upgraded) DS1054Z but since the 1104 can itself be upgraded to 200 MHz, does that high price seem pretty insignificant?
Not my money, not my choice to make...