I got a magnifying light from JGR back in May, it made a huge difference in my "seeing". The magnification is most important to me! Then I got a second saw - I tried to get a different mag light locally that was not as expensive. It is not nearly as good, I get a lot more "shadow" and bouncing in the visual field then I do with the other one. I am amazed at the difference in them. Well worth the price difference on the 1st one. I tried to get a 2nd one while I was up there recently for another class and they were out of stock. Said manufacturer/supplier said they always get a run on them in the fall when school/colleges start back so I am waiting on them to call and let me know they have them in again. Guess I am going to have to move the 1st light to the 2nd saw until then. (Bit of a pain but using the 2nd saw more than the 1st.) Interestingly enough - when I was taking my 1st class at JGR's, they have them on all their saws - they said they had only had one person in all their years who said they couldn't use it as it caused them to see double. When I got mine on my saw initially - my DH tried it and said "whoa, I can't use that - I see double! Not sure why.