Manga-news.com's list of unmissable seinen. The order is alphabetical.
Out of all the Manga I've read, these are my favorites ^.^ So they're ones I would probably try to push on anyone to read.
Manga aimed toward an older audience.
Not in any particular order, except for maybe the first two. Lots of hidden gems in here! Thanks for looking.
Serious stories with bad ass main character and lots of action and superb drawings