I might be able to save myself a few thousand dollars if I do a combo deal and buy a boom and chipper. The chipper I am looking at is a 2002 Vermeer BC 1000XL. My question is, disc or drum? The guy selling it said he thinks its disc but I am pretty sure its drum. I know that the new ones are drum but am not sure if the older ones are? Also can any one tell me their experiences with this style chipper. I currently own a bush bandit disc chipper and have very few problems, but want to upgrade? Thanks.