Most of the reviews for this grinder are from amateurs who are likely to compare it to a Dremel tool and love its functionality. Like the man who held the mill for hundreds of hours. Here are the pros and cons. Pros: Good performance, fairly quiet and smooth variable speed operation. Cons: Pretty bulky, doesn't fit in tight spaces. Most importantly, there is no lock to keep the mill turning. This is a real disadvantage as it forces you to keep the paddle down all the time. Unforgivable for such a tool. All cheaper Makita grinders have a lock. This one should too. It's also poorly balanced, too heavy on the back. Therefore, the ability to do fine work is hampered by a back that is too thick to hold the rudder down and the tool balanced.