I'd buy the 5.5" model in a heartbeat if it had minimal bezels, but unfortunaly that seems very unlikely based on what we've seen so far.
Even the 4.7" version is pushing it, being larger than last years Galaxy S4(which has a 5.0" screen!
The leaks and mock-ups may have got it wrong, but it looks like Apple is only focused on thinness when it comes to reducing the footprint.
While thin is nice, the problem for me is tallness. Even the iPhone 5 feels too tall in some of my jeans pockets. Had Apple gotten rid of the home button, the iPhone 6 could have the same height and only be somewhat wider.