I’ve got a subscription to Marvel online comics. Still haven’t read the Star Wars comics yet, but plan to at some point. I’ve read that the “Star Wars” line isn’t necessarily that good, but seems that people liked the mini-series Vader Down comics.
Vader Down isn’t really it’s own discreet thing; it’s a crossover arc spread between Star Wars and Darth Vader. Star Wars has some good arcs and some bad ones, it’s pretty up and down. My favorite canon SW series are Dr. Aphra (which you probably ought to read Darth Vader before getting into), Lando, and Poe Dameron.