It's been my experience that most makers (around here at least - Minnesota) of real maple syrup stop boiling it too soon, leaving too high a water content so as to have more product left to put in the bottles. It ends up too watery and devoid of the rich, deep flavor and texture I remember from the real maple syrup I tasted in my youth, which came from a now-defunct maker in western Wisconsin.
I prefer a brand sold by WalMart called Roddenberry's Butter-Maple syrup. I like it better than the real thing or any of the national brands I've tried.
I defer to your greater experience on real maple syrup. I've only bought the bottled kind, and probably don't know enough to recognize "the good stuff". I'll keep the brand you recommended in mind--thanks for the tip.