I have never had a bad experience with CEM. With them I know im getting what im paying for - which is huge in the rc business. Ive been beat by the likes of chemone, manpower, purity solutions, GWP , extreme , ergo , iinovative. Never CEM. Been in the game 20 years..every time i tried to save a buck here and there with the rc companies i just mentioned - i regretted it.One thing or another I bought from them was garbage. Now I stick with companies that have been in the game over 10 years...that always have legit products..like CEM.