I opted for this one but without the light(saving weight)  http://www.ebay.com/itm/Magnifying-Glass-Lens-LED-Light-Lamp-Visor-Head-Loupe-Jeweler-Headband-Magnifier-/252438525619 as the loupe with the wirespring was not comfortabe wearing for me.. The advantage of mine is you have 3 different magnifyers in one loupe and very easy to change during work, just click the 2nd or 3rd loupe down. With the other models you have to take it of your head and change the glasses. I also have a very nice