main complaint is the calendar, you click on the day and it shows an hour by hour view, not just a list of actual items one after the other, so you have to scroll to see everything that day, big pain in the ass.
Turned off the parallax thing straight away, their quest to make it simple somehow included stupid battery wasting gimicks, shakes head! same goes for some of the zoom in and out animations, wished i could turn it off.
Other than that, its fine i guess.