I use whole cone mostly with some pellets. My BK is a keggle with a false bottom that covers the width of the bottom of the keg. I buy pounds of whole and smaller amounts of pellets. The filter bed of whole hops works well at collecting break and also does pretty good at filtering and holding sludge from pellets added later in the boil. I brew mainly American and English styles. For the hop forward styles at KO I cool to 170 F add hops and recirculate with a pump for about 30 mins. The wort cools to about 150 F after this time. When I pump it to the fermenter it is clear and free of the color green. The beers smell and taste great. I must say I was not a hophead a few years ago but I do enjoy more bitter and hoppy beers now. To those who say you can't use whole hops with a pump, yes you can if you use a large false bottom.