To me as a Tek 11A33 user I should notice that Rigol paid attention to some analog aspects of the AFE which are overlooked for decades by the big players.
"" ? Phenicis" chip up to 4GHz , integrated digital oscilloscope analog front end of all the functional modules required, but also includes 1M ? input electronic attenuator , to achieve fast and really "quiet" silent gear switch; The chip uses a unique circuit design, its 1M ? mode overload recovery time reduced to 0.5% of existing products. The chip only need to add a small amount of external components to form an oscilloscope analog front-end channel, revealing the " simple is beautiful " system design and greatly improve the digital oscilloscope consistency and reliability. "
In addition to post a 0.5% recovery spec on a product conference beside NI they are to my knowledge the only one who design a relay-less AFE. And this all w/o the big wording machines!