I have a 4100, which is really just an older model of yours. I have the following implements and sizes which I have found to be ideal: 54" box blade, 60" rear grader blade, 50" rototiller, 14" 1 bottom plow, subsoiler, 410 loader, 30" rear scoop. Most of my implements are Land Pride, my tiller is a Woods. I'm happy with the size and quality of all my implements. The main thing to remember is to buy something at least the width of your rear wheels. Lots of folks will try to sell you 48" box blades for this tractor. Don't do it-go for the 54" size, so that you can cover you rearwheels (with R4 tires and wheels set in the wide stance, the width is 49"). Not many companies offer the 54", just 48 or 60. Personally, I think that a 60" box would be too wide for the HP. Oh, did I get off track of your question? I have the 60" rear blade, which I recommend for combo-soil moving/ digging and snow removal use. For snow removal, only your could use a 72" blade with no trouble, but might be a problem for dirt work. One last thing, this tractor is light so be sure to have good rear ballast when using your loader. I use my box blade with about 200# of steel fastened to the top of the blade. Also buy some teeth for your loader bucket. You won't believe the improved performance, especially for these light tractors.