Capacity makes a huge difference. Is this for random home shredding, or bulk work shredding? Do you need cross-cut or something better?
For home, I bought one from Target years ago for like $30 or $40, Regal brand perhaps? that is so good it partially shredded a penny that I didn't realize had fallen into an envelope. I routinely stick full envelopes full of crap into it (including those ones with fake cardboard credit cards) and it never has a problem. However, like all home models, the basket part fills up way too quick. I highly recommend it...but I don't know the specific model, or if it is still made. If no one has a better suggestion and I remember, I'll look when I'm at home.