Not to state the obvious, but...whole hops...they are superior to pellet hops in every way, except size, but as homebrewers we needn't concern ourselves with the displacement of hops in the kettle. Lucky us!
Pellets have always been a nightmare for me and they don't taste or smell as good in the end product (because they are crushed and mangled instead of left whole...imagine that
). And they act as their own filter bed helping to catch break and other floatie materials.