Hi. I'm new here and would like to know how happy the owners are with their M40 Series Kubota's, specifically the HD-1 line, not the SU line? I've been looking hard at the John Deere 5075E, the Kubota M7040HD-1 and the NH Workmaster 75, TA4030 and the Massey 2635. On paper, the Massey 2635...