The factory base on the 16" makita is pretty flimsy - stamped steel. The 10", on the other hand, now comes with a very nice cast base. Perhaps Makita will upgrade the 16" base next time around. But I suspect that most of the market for the 16" is for cutting landscaping timbers, etc, where accuracy is not as important as it is in Timber Framing. That's why most timber framers who own the MAK16 upgrade to the better base plate. I have both an "old gold" and a "new blue", and both have the upgrade. CB.