When reveilles and I got married, most of the items we put on our gift registry were items that I wanted for the kitchen. One of the things we received was a Salter 3007 Aquatronic scale. I had never had a kitchen scale before, though I knew that Alton Brown, Rose Levy Beranbaum, and Cook's Illustrated all recommended them for baking, which is the type of cooking I enjoy most. After the wedding when I started using the scale, I quickly realized the joys of baking with a scale: I can measure ingredients more accurately (giving more repeatable results with recipes) and I use fewer dishes (since I now rarely use measuring cups).
After almost a year and a half of use, I realized that the Salter has some shortcomings. While it has a 11 pound/5000 gram capacity, it is only accurate to 1/4 ounce/5 grams, which is not accurate enough for some of the recipes I have. One alternative, the Soehnle Futura (which is recommended both by Rose Levy Beranbaum in The Bread Bible and Cook's Illustrated), has the same capacity and a higher accuracy (0.1 ounce), but is more expensive and is difficult to switch between ounces and grams.
I recently discovered Michael Chu's blog Cooking for Engineers (which has a LiveJournal syndication feed), and he recommended a scale I'd never heard of, the My Weigh i5000. It has the same capacity as the Salter I owned but with an accuracy of 0.05 ounce/1 gram. I ordered one from Old Will Knott Scales for $57.41 (which is the price including shipping) and cost less than the retail price of either the Salter or the Soehnle. The scale shipped the same day I ordered it and it arrived very quickly.
I haven't had a chance to really put it through its paces yet, but my initial reaction to it is quite positive. It responds very quickly when adding ingredients, has a backlit display (which is nice when using a large bowl that casts a shadow on the display), and can easily toggle between displaying the total weight on the scale or just the weight added since the last tare. The i5000 also has a counting function where you can, for example, put 10 of some item on the scale, tell it that there are 10 items on the scale, add more of that item to the scale, and have it tell you how many items are on the scale. Unless you are running a jelly bean counting competitions, I'm not sure why this is useful, it it's a fun feature nonetheless.
If you are on the lookout for a kitchen scale, I would recommend taking a look at the My Weigh i5000.