I have the The My Weigh 7001DX and I love it. It can weigh upto 15.4lbs and it's not that big. It weighs in grams, ounces, pounds and kilograms. It has a large lit display as well, and it's pretty cheap for what it does. I've had this one now for about 4 years and I use it constantly. Here is a link to the exact one I have Scale Magazine.com - Independent Reviews of My Weigh 7001 Kitchen Scale It also comes with a lifetime/30year warranty.
I've got this goofy Sunbeam brand rotary-scale that weighs up to five pounds. I think it's a portion-control scale rather than a bona fide cooking scale, but considering it was only a few bucks at ACO (same place I got the bulk of my pots and pans, coincidentally), it's all right.
If you can afford them, Soehnle's scales are great. The Futura and their new model 65055 have great reviews in Cook's Illustrated, but they cost major bucks since they are made in Germany and the Euro is getting stronger by the day.
Here is the link for the 65055: Amazon.com: Soehnle Model Scale - 65055/65055: Home & Garden
"Tell me what you eat, and I will tell you what you are" Anthelme Brillat-Savarin