Rick Geary does this. Though they aren't mamoth-sized by any means, it is the perfect format for his storytelling style. The fact that he does one and done biographies only enhances the format's appeal.

Terry Moore's Strangers in Paradise, Bill Willingham's Fables, Brian Vaughn's Y;the Last Man and Jeff Smith's Bone are other series that reads better as full story arcs to me. In fact, I was only able to get into the stories of the last 3 mentioned because I went back and picked up tpbs of them after not being drawn into them when reading the first issue or few issues of each.

I find myself leaning more towards trades these days -- I've been reading Kirkman's INVINCIBLE in TPB format, and I think it works well in that form.  I think I'd feel somewhat shortchanged reading the stories in monthly form, but as story groupings in TPB form, they flow well and I feel "well-nourished" after finishing a TPB.

Barring some major migration to an electronic distribution format, I think TPBs do spell out the future of the comic industry, with monthly titles going the way of the dinosaur save for those "event" storylines which would ultimately be ccollected in TPB form anyway.