I ordered a new 3046R and I am going to pick up a tiller to bundle in as there is additional discounts with it. My question is what are the differences between the 1172, 2072, and the 3072. I am getting a reverse rotation tiller. I told the sales guy the 1172R would be fine but just making sure I get what i need. I use it for lots of food plots whether its in the hills with rocks or in the bottom in ice cream silt loam. I have looked at the online brochures and am still confused especially looking at prices on build your own. the 11 series shows to be more expensive than the 30 series but i thought higher number meant heavier duty. Anyway all info is appreciated.