Courtesy of black Friday/cyber Monday I changed my 5" phone for a 6" phone of the nominally same type as Chris's. The idea was that in use, mine would be just like hers, any problems could be sorted by me etc etc. Plus I read quite a bit on the phone these days, and a bigger screen helps make the experience a little more fluid.
Typing doesn't seem any better though, judging from all the typos I just fixed. :p
Bloomin' 'eck though, 6" is a big old lump in your pocket. Whoever can invent a phone with a holographic or projected screen that works in daylight and responds to touch, while being small and easily pocketable in itself will be onto a winner.