Sorry JDgreen227, but you got the wrong guy. I'm not loud, I'm load . I have no opinion one way or the other between the 4210 and the 4115. I bought the 4310 because it seemed it would suit my needs, it was at a great dealer in stock, and I felt like I was getting a decent deal. As for throttle settings, it's been my experience when running hydraulics, it's best to run the throttle at higher speed to run the hydraulic pump at it's optimal RPM. I use the transmission to set my speed and tend to keep the throttle up. Thanks for your reply and I hope you enjoy your green as much as I do mine. /forums/images/graemlins/smile.gif