DS-1054Z vs GDS-1054B shootout?

[Fungus]

It looks like other people are aiming at the $400 price slot, eg. the GW Instek GDS-1054B

http://www.tequipment.net/Instek/GDS-1054B/Digital-Oscilloscopes/

Price is close to a DS-1054Z and specs are similar, even the model numbering is similar to Rigol (DS1054Z or DS1054B?)

Being hackable obviously gives the DS1054Z a big advantage but maybe time for a shootout video.

[saturation]

Dave did a video here but it lacks more depth in performance testing. 

https://www.eevblog.com/forum/blog/eevblog-824-gw-instek-gds-1000b-oscilloscope-teardown/

and in the FFT analysis there is some comparison between Rigol and Instek, plus a good contrast against top brands and a dedicated SA:

https://www.eevblog.com/forum/blog/eevblog-845-oscilloscope-fft-comparison/msg851840/#msg851840