Hell yeah, better late than never! This is my all time fav. I have 3 copies. The regular softcover TPB that is my original from a kid. It is the most worn binding of any book I own. =)
Also the Omnibus style Hardcover collection of the 3 DE series.
And the Hardcover Slipcase signed and number by Tom Veitch and Cam Kennedy.
I went through several purges of a lot of my collections and they are some of the very little I kept and will always keep.
I also love the Tales of the Jedi DH series.
Marvels Darth Vader titles are great. They always put their best writers on them. There have been at least 3 renumberings of the DV series since they acquired the SW license, usually when a major new writer is brought on. The first two are Gillen and Soule and their runs are really good I thought. They are collected in TPBs and HCs. As the name suggests the series focuses on Darth Vaders exploits outside of what we already know.
The Thrawn Trilogy is a good DH graphic novel series as well as the Crimson Empire series trilogy (follows Kir Kanos, surviving member of Palpatines Royal Guard).