I would say that the Kitchenaid is the more robust of the two and doesn't judder about as much. The thing that swayed me was watching the cookery programmes [bakeoff etc] on television - they all use the Kitchenaid, so I thought 'if it was good enough for them it was definitely good enough for me'. I think they do more or less the same things but the Kitchenaid can stand a bit more rough handling.
You can get them in both 110v and 240 v verdions. Many of the cheap ones sold online in the uk are us imports running on 110v. You can buy transformers to convert them to uk voltages and then they work. Best advice is to find out what you need for uae and then check direct with retailer. Well worth the money and the effort, they are fantastic machines.