Ptok
I have a b1700 with b4672 BH,and I am very pleased with it.
You MUST understand that these are not full size BH's or Escavators. They are small hoes that can do A fare amount of work, In a fare amount of time without abusing your equipment or exposing yourself to dangerous situations. BUT BUT BUT, used Improperly or too agresively can and Will damage your equipment property and put yourself in dangerous situations.
I love mine, but I had a large Bh come to pull a lot of large stumps out, because it would take me too long to do it with out abuse.
I have a B7300 with a Woods 3 pt hoe. I've heard a lot of people report problems with hoes that rely on the tractor's frame, especially for the smaller tractors. Mine has a large sub-frame that goes underneath the tractor and is probably stronger than the tractor frame. This keeps the 3-pt from having to handle all the stresses created when using the hoe.
And therrien is right - this isn't a big hoe that can handle all jobs. Mine has pretty good breakout force, but it is more than the tractor weighs, so there are definately limits to what you can do with it.
But it is really nice for planting trees, bushes, etc. - much easier than digging a hole by hand. Also good for landscaping - digging out behind retaining walls, digging trenches (either short ones or wide ones - to run lots of pipe I rent a full size trencher).
I'm glad that I have the subframe - I'd be really worried about the stresses placed on the tractor otherwise. (You basically put the hoe up on the two side supports, drop the front bucket [you need to have *lots* of weight in front], and the tractor is then up in the air.)