Been using my TTL loupes for six years now, excellent product. Customer service is amazing. After 6 years of daily use I had some damage to my loupes like torn nose pads and a broken Arm, when I contacted the company for price quote for the spare parts and repair, they charged me Nothing. Spare parts were complimentary according to their email :)
I only paid the shipping fees... No other company offers such great customer service.
Soon I will be upgrading my loupes and light bundle. I'm positive I will stick with student loupes company.