I upgraded from a CK30 to a DK40, I wanted the extra lifting capability of the DK FEL and I wanted to be able to put a stronger BH on it than what I had on the CK. The CK is slightly more maneuverable but not in a major way. The DK will do more damage to your lawn than the CK, but if you are spending most of your time in the woods.. it doesn't matter much. The DK is heavier than the CK and the tires have less contact area, hence the reason for more damage to lawn. Even with the rear tires loaded, in 2wd I find that I am spinning the rear tires on the DK easier than I did on the CK, further tearing up the lawn. For close operations and repetitive FEL use, I MUCH prefer the single HST pedal of the CK over the dual pedal of the DK. I wear size 11.5 boots, never use the brake except for parking, so getting boot stuck is not an issue for me. I put about 150 hrs on the single pedal CK and after 75 hrs on the DK I am still hitting the wrong pedal at the wrong time and I have damage to my tractor storage unit and the garage on the house to prove it. In 4wd, the DK is almost unstoppable. With chains on the DK, it plows thru the snow much better than the CK did, even though the CK had more aggressive chains on it. I like flipping a switch to put the DK in 4wd, rather than fighting with the manual lever of the CK. I like having a 3pt control in the rear for when I am hooking up implements on the DK. If you are going to be using anything on the 3pt that is going to be using hydraulics... I would order a second set and have them installed before delivery. I have 2 remotes on the rear and there are times I wish I had 3. If you are doing any rear blade work, Top-N-Tilt will make your life much easier.