I would have been happy with a Kenwood Titanium Chef but everyone I know with the mid to lower end Kenwoods have had issues, especially with bread dough.. where the Kitchenaid stands out from the rest(forget the asthetics) is that it is direct drive, no unnecessary cogs, gears or any belts to stretch and slip.
John Lewis is a great place to browse if you have one close, check out attachments as this is where a Kenwood might win in for you, if you want more processor type function then you will prefer a Kenwood as it has the high speed top section but if you don't want that then the comparable front attachments are better on the Kitchenaid.