Although Steinberg haven’t updated their Eucon protocol for ages, my Artist Mix is still by far the most intuitive and powerful controller I’ve found for Cubase (i.e. easy access to quick controls). The encoders are touch sensitive which is great for automation (although flip is cool too).
I have a Tranzport too! I use it all the time and it just works.I actually have 2 Alphatracks (one is a spare) but I don’t use them since I got the Artist Mix.