Bob, just my two-cents here, but unless you are planning on doing a lot of extremely heavy loader work orrrrrrr.... doing a lot of mowing where you don't want to tear up the ground so much, I'd go with Ags. I have the industrials on my TC-40D and had Ags on my old 1720 and for traction in just about every situation except for ice, the Ags win hands down. I got the industrials because I do some mowing with the tractor near the house and frequently are doing other things with the tractor which causes me to have to drive around the lawn, so I thought the industrials would be better suited. Probably I'd buy them again, but they have been a disappointment in the traction department. I think it also has to do with the fact that the industrials spread out the load a little more, and so less friction, because they are wider. On the super-steer, unless you have some very tight quarters to work in, or are using a belly-mount mower and need to get in extremely close to trees etc, I don't see that the added cost is worth it. I know many folks really like it, and I'm sure it has it's place, but I've been very happy with the standard steering - seems NH already made it capable of fairly sharp turns. Good luck and take your time. I know you want it now, but hopefully your making a decision on something you're going to have for a very long time. Be patient, in the end you'll be glad you did.