I too went through this dilemma with my 4310 recently. After reading ALOT in here I decided to go with the loaded tires.
Reasons I thought were interesting/valid:
-As dmp said most peoples' experience was that the front tires cut the turf more than the rears-even when loaded.
-When you have loaded tires your extra weight is resting on the rims and tires NOT on the wheel bearings
-Lower center of gravity
-Cheaper than wheel weights
Obviously there are two sides to this coin but I went with the Rimguard and so far I'm pleased.
Either way, you own a Deere so you'll be happy /forums/images/graemlins/smile.gif