It's all in personal preference. Alot of customers like the physical feel of the buttons and in that fact the impression is a good way to go. Otherwise with the haptic feedback on the mythic it vibrates when a button is pushed to simulate the feel of a real button. The mythic offers a few added features available one being FLO TV. Also mythic offers a wider ability to personalize your home screen and main menu's. If i was 14 years old again. I would LOVE the mythic. My birthday is around the corner so you know what to get me ;)
P.S. I am a ATT mobility agent and some of the best selling phones and less chargebacks "returns" are any of the samsung touchscreens.. Doing well for themselves!