[zaya]

The switch for me was painless. I find that screen interaction is much easier on the Touch because of its Pseudo-flush mounted style. Hitting the soft keys, x-button etc. are very easy. Touch flow is nice. I use SPB Full Screen Keyboard when typing long messages.
You only THINK memory isnt an issue on your Mogul! Once you have your Touch and you disable the built in Task manager, or do Like I did and exclude everything but Internet Explorer you will be blown away by the speed of your new ppc.