Having used the Millonzi LD48 for the past year I cannot imagine why anyone would want 1) a bigger grapple on a CUT or 2) two grapple arms rather than one. The only design feature that I would consider would be one of the clamshell style grapples like WRLong sells and that would be a toss up for efficiency but would cost lots more.
I think people get confused when buying grapples in that they equate their bucket size with the grapple size. They are not related. You actually decrease your effective load capacity by opting for the bigger heavier grapple. I have not come across a single item in all the work I have done that I could not get into my grapple and hold it securely enough to transport it 200-300 yards. I have securely grappled some things like big stumps that I could not lift but I have never found it difficult to get a firm grip on any shape object that was big enough not to fall between the grapple tines.
Some people don't like the idea of a smaller grapple because they don't think it looks good with their big tractor. Some folks will always worry about certain attachments not being big enough in life. For those who are more concerned about getting work done than appearances, the lighter weight 48" grapple can handle anything a CUT can throw at it.
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