Do you know Z-Cult, sensitive piggie? They're the ones who make all those chronological gigapacks.
When I discovered the wonderful world of stealing comics, I feared the websites would be shut down within in a month, so I got as many full runs as I could: Cerebus, X-Men (up till 1993 or so), Fantastic Four, Hellblazer, Teen Titans, LoSH, etc. Two years later the websites are still there, and I got a drawer full of unread comics I haven't even touched.