Hey, GR. I got to know the 4115 very well before I decided to buy the 4110. Why did I "buy down," you ask? Turning radius was the primary reason, and cost was the secondary factor.
Since I mow about 60 hours out of every 100 hours, and since I have over 40 specimen trees to circumnavigate, the shorter turning radius sold me downward. What did I give up, you ask?
First, the 4115 is a longer frame (hence the longer turning radius) and has larger wheels. The length and larger wheels are a plus for someone with more/heavier loader work, or if someone wanted a backhoe. In addition to the stability from the longer frame, the 4115 can take a 72" belly mower while my 4110 can take only a 5-footer.
Second, the higher PTO HP on the 4115 (19.9hp vs. 17 hp for the 4110) gets the owner into the bottom of the acceptable range for bigger PTO-powered implements, such as a 5-foot bush hog or small overseeder (
Gandy 48" ). Of course, you are now looking at a direct injection Yanmar under the hood versus the indirect injection Yanmar for the 4110.
Third, even though the hydraulic system is the same between the 4110 and 4115, the effective usability of the loader and 3PH on the 4115 is increased by the greater gross machine weight.
Finally, if you don't mind some feedback from someone who owns the closest thing to the 4115, I'd say you will love the machine. All of the controls are simple, solid, and convenient. The loader and attachments, including the belly mower, come off and on as easily as anything you will find out there. There will be plenty of tips on add-ons, so I'll skip those for now. Hope this was some help in the event you find yourself wondering what you would get in comparison to a machine that will cost you around $1,800-$2,000 less.
Good luck /forums/images/graemlins/cool.gif