BENQ released V2 firmware at gaming.benq.com/downloads for Z-Series monitors.
Older Z-Series with V1 firmware do NOT support Blur Busters Strobe Utility.
XL2411Z on BENQ.com
XL2411Z on Amazon
XL2420Z on BENQ.com
XL2420Z on Amazon
XL2720Z on BENQ.com
XL2720Z on Amazon
Monitors obtained from these sources work with BENQ-authorized 3rd party utilities including Blur Busters Strobe Utility.
This is the difference between the BENQ monitor models:
XL2411Z: 24″ budget model, one DVI input, one HDMI input, no DisplayPort.
XL2420Z: 24″, includes S-Switch controller, DVI, DisplayPort and 2 HDMI inputs.
XL2720Z: 27″, includes S-Switch controller, DVI, DisplayPort and 2 HDMI inputs.
XL2420G: 24″, same as XL2420Z but includes G-SYNC.