I would definitely recommend 6610 in the 8000 range. It is smart sleek and an intelligent companion. If you are going to use GPRS ( I recommend you do!) then obviously the 6610i is better. The phone is good for senior executives because of its perfect styling but you have to be very careful about storing personal details on phone because it has a finite non extended memory. The camera resolution is not that great and is not the primary reason you are buying the phone but in daylight you can definitely take a few portraits.
Also its battery life is good like all Nokia phones and the menu is intuitive so even if you have switched brands you can get used to the menu in a few days. The Ericsson phones in the category are bulky and also not very user friendly on the menus while the samsung and the siemens are either all style or all utility.