I've used Skye Peptides for KLOW, PT-141, Ipamorelin, Tesamorelin, and Retatrutide, and it has been a great experience each time. All have worked well for me. My first order was for Reta in July. I had been on prescription GLP-1, and when I switched to Reta, I could tell it was working in terms of appetite suppression, and it has continued to work for me. Next, I tried Tesamorelin, and had no negative reactions to it. Then I added KLOW and Ipamorelin, and they seem to be working well with no negative side effects. So, I've now placed about four orders with Skye, and each has gone well. In early October, after visiting Peptidecritic to see if I could find cheaper places to order from, and because Skye did not have SS-31 (or was out of stock? I don't recall the exact reason - looking again,they seem to have it back in stock now), I tried ordering MOTS-C and SP-31 (aka SS-31, Elamipretide, MTP-131, or Bendavia) from Studz Peptides, which was a good experience too. All orders from both vendors arrived quickly, there was good communication on when things were going to be delivered, and the peptides seem to all be legitimate, although I did not have any testing done outside of how they have felt. That's my anecdotal experience so far, but figured I should at least share my small data point.