Another consideration is your intent of installing and removing the backhoe.
Are you going to install it and leave it on or will you need to take it off to run rotary cutters and other implements on occasion?
The Woods models require the 3 point arms to be removed and stored in order to install the backhoe. This can be a pain as you could misplace the arms or they could get damaged inadvertantly when not installed. The Woods backhoe is a great backhoe and the new excavator styled curved boom is nice. It runs from a PTO pump and seperate hydraulic reservoir so power is more consistant but noise levels will be higher as the PTO will be spinning away right under you moving fluid through the pump. The controls are pretty straight foward but I feel the "feedback" from the control sticks is a little vague. The only other item of concern with these hoes is that the platform for your feet is very small and doesnt afford room to shift your feet around to get comfortable after hours of operating the hoe. Again, this is just my opinion, your results may vary.
The NH backhoe is also nice and it does not require the 3pt arms to be removed to install it. After all, it was designed to "fit" the NH tractor. Here is the blurb from the NH site..."Attaching and detaching the backhoe is a quick, easy one-man job. The subframe remains attached to the backhoe and the three-point lift arms stay on the tractor. To hook up, just back over the subframe and quick-couple the hydraulics. Position the self-aligning rear hangers and raise the front of the subframe hydraulically. Secure it to the front hangers with two pins, and you're finished". It runs off the tractor hydraulics and simply fits the tractor better and is closer to the back of the tractor than the Woods model. The seat is very comfortable and the controls have good "feel" with positive feedback. It operates quieter than the Woods and there is more overall room for the operator.
A few final thoughts, regardless of what you buy, you MUST get a subframe! Dont let the dealer tell you you dont need one. We dont sell any hoes without subframes. We have had several tractors come in that were literally "broken in half" by excessive backhoe use, like busting out a big stump. NH will not warranty the tractor repair if a Woods BH breaks it in half but Woods will pay for the repair, ONLY if a subframe was installed. Makes sense obviously, the subframe will keep the tractor from breaking in half so the warranty wont be a big issue for them. The NH backhoes come standard with a subframe for obvious reasons.
Please consider these items before making your buying decision. You will likely have the tractor for a while and the convenience of installing and removing the backhoe or any attachment for that matter will become more important over time. Also consider your ground digging conditions; sandy, rocky, shale, hard-pack, clay,...and fit the hoe with the proper bucket and teeth for those conditions. It may cost a little extra for a heavy duty bucket etc, but the results you get and the effectiveness of the right equipment will help it perform better under less stress and will last longer...ulitmately making you a happy owner!
Thanks,
Larry