..Talked with a couple of guys I know today who do the same thing I do about this situation and they brought up an interesting point.. They said that the smaller "heavy lawn mowers" (Deere 455) would pull the load OK, but where ya ran into trouble was with the front end losing traction or coming completely off the ground and causing ya to lose steering.. That sounds annoying.. They also were pretty hellbent that 4WD was the way to go for both function and resale..
..Anyways, they both recommended going with the relatively heavier compact tractors ala the Kubota B's, BX's, and the like..

**SIGH** It's fun hunting down this thing, but I'm ready for some new hardware to play with..
