It's been well said already, but yes they break, and it isn't brand specific. Put a 3PH hoe on a tractor and put it in the wrong hands and you have problems. Henro won't loan his to a neighbor or abuse his machine, so he'll probably be just fine (sorry, hope that doesn't derail your new machine purchase!). We only sell sub-frame hoes, but I have heard that they can break as well, it just takes a lot more abuse to make it happen. I sell a couple dozen backhoe tractors a year, but if a buyer is going to use a machine for 100% commercial use with a crew of guys I suggest they buy a commercial machine (twice the price).
CUTs are very versatile machines that handle a huge variety of implements, but they don't take place of small dozers and excavators in applications that really need them.
On the Cub, we sell the Mahindra 15 series which is basically the Cub. For it's size it is built heavier than most, and as it is built by Mitsubishi you can be sure it's top quality.