On the advice from my neighbor, I got a wear blade (no teeth) from W R Long and I couldn't be happier. It extends the bucket edge about 3-4" and is about 6 " long underneath and as hard as it can be. I've been picking rocks,stumps, and other irritating things as well as plowing a gravel drive, can hardly see the wear. The reason for the wear blade as opposed to the tooth blade is the chance of bending the ram with the tooth.
It boils down to what you expect and need to do.