I am very happy with my lumadent loupes. I have the 3.3x flip ups. Well made, easily adjustable, and very affordable. I respectfully disagree with the previous poster, I have found many great things about them. The price is just an added bonus. After 2.5 years with these loupes, I found them to be very high quality. My wife has orascoptic TTLs, which are a bit lighter (obviously) but the optical quality of the magnification is the same.
LumaDent's customer service has always been fantastic. And be sure to look into their new battery/light system, it clips onto your scrub top/collar with a magnet which eliminates the hassle of the long cable running down to your waist. I use my loupes for operative, fixed prosth, endo, and perio, and then I can easily take the light off and move it to my Lumadent safety glasses for removable prosth, exams, and surgery. I am just really happy with the company as a whole.
Whether they want to believe it or not, all dental students/dentists will replace their first pair of loupes within a few years. Every dental student says "well I'm going to have these loupes for a while, I might as well spend the money on the best ones", but that's a LOT of money to spend on loupes that you tried on for a few minutes max. It takes a couple of years of constant use to know what you need in a set of loupes; and I don't think that working on a typodont in a mannequin provides an accurate representation of how you'll be using your loupes on real patients. The working distances vary so much more on real patients, as does lighting, and visibility in general.
I have to say, I don't think the quality of my dentistry would be any better with the same magnification from another company.
