I whirpooled and filtered 2 of my batches. Everything else has been 99.5% transferrred to the bucket (just the hop trub left behind). I noticed zero difference in the finished beer, outside of the filtered ones having about half the trub in the bucket at racking.
Benefits that I observed were very little. I rack above the trub, so clarity is not improved when pre-filtering. I suppose you gain more primary headspace with less trub, so maybe you have a little less chance of a lid blowing off. If I want increased clarity, I rack to secondary, cold crash in primary, add gelatin, or some combination thereof.
Disadvantages of filtering/whirlpooling were longer time, increased risk of infection, and some loss of wort that could have been beer.