I've had nothing but positive experiences with them. Shipping is a little slow. If you need it now buy at your LHS. If you are buying spares or extras or can wait a week or two you can not beat HK. I can buy 10x the amount from them that I could the LHS. THe US warehouse is super fast. I order 2x 3s 2200mah LiPOs on a monday and had them on thursday. I avoid items on backorder cause you never know how long it will hold up your entire order. I would not hesitate to use them anytime.