I've had my Loupes company TTL x3.5 for over a year now and I can honestly say it is a great product. The loupes are light and comfortable to use, the standard light is great, but in hindsight I should have gone for the more expensive super light option ( you can never have enough light). I been doing AGPs using these loupes all the way through COVID and they fit nicely under a standard disposable visor, no adjustment necessary.
I do a lot of endo and have a microscope in addition, during COVID I've done a lot of endo without my scope so I was glad I opted for x3.5, as they are fine for moderately complex molar endo, but they are also great for general dentistry too.
Overall good customer service, light and robust loupes and a really good price.
Very happy