Nobody ever really knows if a unit is good or bad until it gets some miles on it. For instance their could be a button issue that doesn't surface until after 5,000 taps. Sound like a high number but if you tap the button a 100 times a day, it may just fail right after the warranty ends. I'm not saying this is the case with 5v OMG, but it has happened with others. This unit has been on the market for approx. 2 weeks from another reseller under the name 5v Wow, I'm sure some comments or
reviews are coming in by now.