I've checked out pretty much all the flameless candle brands and in my opinion Mystique is the best. They require the least amount of batteries and have the best battery life. They have the best, most natural flame color that looks just like a real candle, as well as the flickering. I was a little bit leery about getting the tealights due to the handful of negative reviews, but I received my order the other day and I didn't have a single problem opening them or getting the cover back on. I used a nickel which fit perfectly and it was very easy to turn. Highly recommend these!