Since I have three different UV Flashlights, I thought it would be a great idea to do a side by side comparison of all three. Here are the three UV flashlights I have purchased so far. 1. Inova X5MT-WUVT High Powered Ultraviolet Led Flashlight US$40.45 2. Ubesta 3-in-1 15+1 3xAAA Flashlight US$11.56 3. UltraFire® 3w Ultraviolet LED Flashlight  US$7.46 First, I tested them, one by one, on a