VCDS function and ergonomic is rare among orginal or aftermarket tools. If you're looking for something universal, autocom/delphi is quite ok and you will find it useful for majority of cars. For some functions it could be even more handy than dealer tools.
I've got good experiences with my Bosch KTS 570. But you definitely need the additional multiplexer. Good but expensive stuff... Recently I've worked with a Würth WOW! Supports a bunch of cars and is doing a proper job.
Original bosch KTS is quite expensive. Autocom is a good alternative, because i notice that a lot of function that KTS are not useful.. With KTS you can read a lot of fault code, and enter in a lot of control unit, but you can enter in the main control unit with a cheaper diagnostic..