Erm, iBrowse is $69 USD and Voyager is only $47 USD and Voyager has a Shockwave Flash plugin... i'm confused I dunno which one to get.
Try the demos of both. You'll most likely find that IBrowse is better. Voyager does have a flash plugin, but it's sadly outdated and hardly ever works properly. (Not to mention that certain features of Voyager have not been reimplemented.)