Works well for me. If you get down to business with something as simple as a tin can, they should all work. Unfortunately, there's always cheap junk that can't even do a simple job.
Lichamp Automotive R1234YF Installer Standard
9 Review
Enhanced Elitech ILD-300 Infrared Refrigerant Leak Detector: Advanced HVAC Halogen Tester with Selectable Gas Functionality
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Robust Robinair (RG3) Portable Refrigerant Recovery Machine, 115V, 60Hz -Efficiently Recovers Liquid and Vapor Refrigerant
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๐จ Robinair (15115) VacuMaster Single Stage Vacuum Pump - For Efficient Single-Stage Vacuuming, Delivers 1.5 CFM
9 Review