The quick attach is not really universal, it is specific to the actual machine. for example the KX 91 shares the same quick disconnect system as the KX 71 and maybe the KX 121. These however are differ than say a Bobcat machine. It is not standardized like the skid steer QD system.
I found there are a lot of good Bucket manufacturers out there on the market, if you look around you can find some deals and drive the costs down while still getting a HD quality bucket.
I have a BH77 and recently bought a used KX121, there is no comparison between the two. The mini x will out dig the BH 5-1. Pine and oak stumps are a 10 minute job if the tree was less than 12" diameter
With HD reaching in from China, I've a new Sany dealer in MN. Anybody know anything about their 8 ton excavator?
http://www.sanyglobal.com/handbook/SY35U.pdf
Here is their company demo vid.
I have not heard anything about them. The demo video was sort of silly, I maybe able to pick that little rock up with by BX! Lol