They're great. A little repetitive since they were published in a newspaper so sometimes the story doesn't go fo forward for like a page. But they are classic SW at its best. If you're already a Goodwin fan then why are you even asking? Go and get them.
The Dark Horse versions I guess are colored and maybe edited, don't know about them or any US version. They published three albums in black & white and I guess unedited in my country and they were fine. If you can find that kind of releases, get them. They were released here in maybe 2004 and 2005 and I think Dark Horse released these in the 90s in the US.