I have had mine for a long time and I bought it while living in Taiwan, so that probably does not help, but I can give you some tips that I think are important.
The multiple tare option is very handy, so you can add ingredients, zero out the weight and then repeat several times.
I think it is handy to have it convert between English and Metric units and have accuracy to 1 gram.
Total capacity will depend on the base use -- mine is good for about 22 pounds and that cost me a little accuracy (good to +/- 5 grams = a little less than 0.2 ounces).
Soenhle are a good, solid and accurate kitchen scale that will do most jobs in a home kitchen for years. They are a German brand but like most things they could be made anywhere now, I think they are still good value for the money.
DealExtreme has good prices on digital scales. I recently picked up a pocket model from there. The shipping is free even though it comes from Hong Kong. http://www.dealextreme.com/products.dx/category.406
The only thing I noticed is the price is tied to how many different weights a scale can record, so you either get an accurate scale that can only weight a small weight, or you get one that handles larger weights with lower accuracy. If you need both accuracy and hecy weight, you might be better off getting two spearate scales.
I've also had good luck with a Salter. I have an excellent Ohaus, but its a bit too much scale for kitchen use. Being able to move the scale between counter and cupboard frequently is a big plus, as is a flat platform. I've had scales with hoppers and other "extras" and they pretty much end up being useless.
I agree with the suggestion of Old Will Knott Scales. The KD-7000 is the one I've been using for the past year, and it's fantastic. Durable, accurate, and has all the features you'd want.
It's great for cooking and my wife uses it all the time for weighing her ebay packages. Easily zero's out and can change from dry to wet ingredients as well as from lbs to kgs.
Bed, Bath, & Beyond actually has about 5 or 6 options. Anywhere from $15 to $60, I believe based on the features. I picked up an inexpensive one for my wife's birthday.