I have owned both phones, and I prefer the touch. It's sleek.... it's smooth... and franky, it fits in my pocket better
. The Mogul is a sloooww phone (don't get me wrong, flashing the rom will fix this, but with that said, the only difference between the two is hardware) The Mogul has WiFi, and the Touch is bringing sexy back. That's really all there is too it.
Oh... one software difference. If you really want OZ Im, the Mogul doesnt have a hacked version (but theres a million alternatives)