I currently have 2 John Deere 400's, both have 9 gallons of fluid in the tires and 75 lb wieghts in the rear whels and they can't climb the hills in my yard without spinning. So I am in the market for a 4wd compact tractor. I am looking at either the John Deere 2305 or Kubota BX2230. Which one should I get?? What are pro's and con's of each?? Thanks guys!!!