In addition to what has already been said, I would go with the 723 for another reason, that is if you want to add a grapple or something like that to the loader bucket later, you will have the extra capacity so it won't hurt so much to give some up when you add the extra weight to the bucket.
The need to have the 723 if you ever want to add the BH90 backhoe is the other reason I would go with it. The 4-point mount BH90 is head and shoulders better than my BL4690, which is the other option.
Now is the time to do it if you ever are going to... /forums/images/graemlins/smile.gif Costs too much later...if you get the wrong one...