Benz C6 vs Vxdiag C6 vs Xentry Connect C5 vs SDconnect C4

Look here: Mercedes Benz Star diagnostic tool: C4 vs. C5 vs. C6

MB diagnostic/programming tool		SD connect C4	Xentry Connect C5	Vxdiag C6	Benz C6
Image
Mercedes diagnostic software for PC	Xentry/DAS	Xentry/DAS 03.2020	Xentry/DAS 03.2020	Xentry/DAS 06.2020	Xentry/DAS 06.2020
	WIS.net	Yes	Yes	Yes	Yes
	EPC.net	Yes	Yes	Yes	Yes
	HHT-Win	Yes	Yes	No	No
	ST Finder	Yes	Yes	Yes	Yes
	STARUTILITIES	Yes	Yes	Yes	Yes
	SDMEDIA 2014	Yes	Yes	Yes	Yes
	PL72	Yes	Yes	Yes	Yes
	All MB from late 80’s to 99 = HHT-WIN All MB from 2001 to 2009 = DAS All MB from 2010+ = Xentry
Mercedes development and engineering tool	DTS Monaco	Yes	Yes	No	No
	Vediamo	Yes	Yes	No	No
Vehicle coverage	Passenger Car	Yes	Yes	Yes	Yes
	Van	Yes	Yes	Yes	Yes
	Truck	Yes	Yes	Yes	Yes
	Unimog	Yes	Yes	Yes	Yes
	Bus	Yes	Yes	Yes	Yes
	Super Sports Car	Yes	Yes	Yes	Yes
Abilities	Diagnostics	Yes	Yes	Yes	Yes
	Coding	Yes	Yes	Yes	Yes
	Flashing	Yes	Yes	Yes	Yes
	Programming	Yes	Yes	Yes	Yes

In summary,

SD connect C4 = SD C5

VXDIAG C6 = Benz C6

All can work for Mercedes-Benz diagnosis, SCN coding, flashing and programming.

But with Allscanner VXDIAG C6 and Benz C6 you have no luck with HHT for the old Mercedes and cannot access the engineering software (DTS and Vediamo).