I just traded up to a DK40seHST from a CK30HST. Needed larger tractor with more power. Had issues with the CK30HST using 6' rotary, and dragging heavy logs from land I'm clearing. Haven't had a chance to put the DK40 in any heavy usage yet. I'm curious what to expect. I've found the DK40 smoother(engine), and hst more responsive with more precision. I'd love to see the DK40 being able to spin the tires in med. range. Thanks.