compare JD 410E to Case 590SL II

I'm a farmer that don't know anything about backhoes but am thinking about buying one. Can you tell me if these two are in the same class or if one is bigger than the other? They are both 2000 models with about the same hours (around 4000). Both are 4x4 extendahoes with cabs. The JD has air, the Case is heater only. The JD is priced about $5000 cheaper than the Case. Thanks