Bendis uses narrative caption style text boxes instead of thought balloons for Spidey in Ultimate Spider-Man.
Although, Harvey Pekar still uses thought balloons in American Splendor
, which is now published through the Vertigo imprint of DC.
The disuse of the thought balloon was mention recently in an NPR discussion on the works of JMS, particularly his comic book work and the Spidey 9/11 issue. See: http://www.npr.org/blogs/monkeysee/2...fans_on_1.html