Bucket loaders are used for loading material such as rocks, dirt, or asphalt onto another pieces of equipment such as a dump truck, rail car, or conveyor belt.  They are usually square and wide.  They are for scooping up materials rather than pushing them across the ground. 

Grapple buckets have a hook or claw that allows you to pick up an irregular shaped object.  They are used to move trees or large pieces of debris from one place to another.  Like a bucket loader, they are used to pick up and move rather than push across the ground.

High tip buckets are used for light materials such as mulch, light gravel, or peat.  They allow the operator to lift the material up higher and drop it into something else such as a dump truck. 

Ripper buckets are used for digging ditches.  It is excellent for digging out tree roots or dense dirt.

John Deere offers replacement teetch for their backhoe buckets.  Different teeth have different funtions.  You can pick the best set of teeth for your backhoe bucket for your specific job.  John Deere also offers a variety of cutting edges for their buckets. 

Used buckets can be found from salave yard in your local area or even on the internet.  You can save hundreds of dollars on a bucket by buying used.  Some companies offer after market buckets that fit John Deere backhoes.  These aftermarket buckets may fill a need that John Deere buckets can't fill and can save you a lot of money.