Paul87: Suggest the NH BH for a couple or reasons.
1) Warranty issues - if you run into problems where the BH affects the tractor, they can't claim it's the BH's fault. I know of cases where a third party brand BH actually split a tractor. If that happened with the NH hoe they can't claim incompatibility caused it.
2) The NH BH is a little more complicated to remove, though not much, but the subframe (running along the bottom of the tractor) comes off with the hoe which leaves the tractor "cleaner".
3) The NH BH in some respects is very strong - example, measure the thickness of the swing plates and compare against other brands. The stabilizer & boom locks are simple, thick metal pivot plates that lock over lugs - crude, but effective and likely never to "fail".
Woods makes a very good hoe. In my opinion, having looked at a number of brands prior to buying a NH 758C, the very strongest BH is Bradco (Mahindra offers them as their brand). The Bradco makes subframes for 55 different tractors so you can take the hoe with you when/if you trade tractors - just get a new subframe for that tractor. Woods offers subframe kits for different tractors as well.
The primary benefit of sticking with the NH BH is compatibility/warranty while the primary benefit of Woods (or Bradco) is flexibility using with other tractor brands. I just bought a TC40 with FEL & BH, but seriously considered the Mahindra because of the Bradco BH - it was almost an issue of buying the tractor to get the hoe!!!! I may end up yet selling the NH hoe and buying a Bradco. The NH hydraulic flow (nearly 10 gpm) is very good and can run the Woods or Bradco better than some other tractor brands and with the NH hoe operation is quick. See my review of a TC40 (which includes the hoe) in the review section of this forum.
JEH