I've looked at the other usual suspects when looking for 5x loupes. I was a bit hesitant thinking there must be something lacking since all the competitors were in the £2000-£3000 range. I went with the 5x flip down (adjustable declination angle for the win) loupes with basic light. I was pleasantly surprised with the product and this has been the best investment I have made all year. It does the job very well, I am routinely using for endo, composite and other intricate jobs including preparing for internal whitening. Tip: Measure your working distance at your place of work and in your most ergonomic posture, these loupes can save your neck and back a world of pain. Customer service was great, I was thinking of adjusting my working length and the reply by email was "Working distance - not a problem, please could you let me know what working distance you are after?". Exactly what you expect when making any sizeable purchase.