I think it doesn't matter how much a scope cost. If it's a cheap DS1000Z series or an one million bucks LeCroy. It has to work, simple.
For example. U buy a brand new car, a $US 15.000 Honda maybe and the ash tray is damaged, u are not smoking.. What are u doing ? I bet you go to a Honda customer and let fix this. And now you won in the lottery and buy a Bentley with the same cheap broken ash-tray.... What u do ? Live with it ? I bet not.
Why nobody should use this DS1054Z as a "prfessional" ? If you repair Tape-Decks, Recorder and something like that you can do it with this cheap DS1054Z absolutly professional. You don't need a one million LeCroy for that. But the Scope has to work correctly. With a damaged one million LeCroy nobody can repair the Tape-Deck, but you can do it with a working cheap Rigol.
Cheap or expencive, it has to work correctly, thats all.
Pls can you post a screenshot with all the Infos. Thx.