Treo 600, 22 days later...

One of the first things that I noticed when I started using the Treo was how well the keyboard has been integrated into the device. Unlike the Sony NX60 where you could type on the keyboard but had to reach for the stylus for most dialog boxes, you can do almost everything using the keyboard and the 5-way navigation button. I say "almost everything" because you can't select text without a stylus unless you have a third party utility like FieldPlus.
In fact there is no graffiti by default, although you can use onscreen graffiti with the help of third party apps like TealScript or the freeware Graffiti Anywhere. I haven't done this yet as there has been no need.
As for the 160x160 screen resolution, it was a pain getting a compatible Theme for ZLauncher, but otherwise I only notice it when I look at the high resolution screen of the Tungsten E.