buyerjohn,
I apoligize I made one mistake, I forgot to list the box blade that it to can be run at 1 size bigger on the CK30 then the CK25 can handle. I have attached a pic that gives the implement comparison between the two models and what Kioti recommends. In your list the box blade would have to be resized to a 60" for the CK25 to be used properly.
Fuel it is hard to say, I can run for quite some time, I want to say 6-8 hours, maybe more, I don't want to say for sure with out timing it. I do know I have started at 10am and by 6pm I'm done, and I still have fuel, this is only time that I have measured the time duration and it is during bush hogging. I'm sure some will say no way not over 8hrs. I can give you a better idea on Monday, this Sunday I'm due to bush hog and it ususally takes me most of the day.
Motor wise in decibles compared to the CK30, I have no idea, I'd say it would be the same. I know it is one of the quieter tractors I have heard. My Cub, and all my neighbors mowers are definitely louder then my tractor.
Woods and Bush Hog brand implement are top grade equipment, 95% will agree here. heck, I'd like a set.
The only thing that I may for warn you on, and this goes back to your original post. Is for a PHD. I have a leinbach PHD, 12", it does the job. But after digging 65 posts, I'm done with digging posts. I have 300+ posts to install; to put a fence up around our property. I'm considering post drivers at this stage. I still like my PHD, I used it over the weekend to dig footers for the barn I'm putting up. However it will be too time consuming drilling 300 holes, dropping the post in, tamping the ground making sure it is level, etc.
You may have already done this but, jump on both models and test them out, this is your decision and you need to feel comfortable with it. Now I don't want to come across negative here, but this is the only way to say this. We here on TBN can give advice, but I'm not recommending that you need to buy the CK25 becuase it works for me, or a CK30 owner saying it works for him. It needs to work for you. /forums/images/graemlins/wink.gif