I've been looking at the Kubota L series and i'm wondering what anyones experence is with r4 tires vs. ag tires. I have ag tires on my 9n but looking at a 4x4 so it's a bit different. My intent is to use this for moving and hauling wood off road and moving snow banks when necessary on my 1000' paved driveway, i also might look to do small jobs for hire - any opinions?