Yes, fandyfire uv-s5 is a clone, but good quality clone.
Kung in my opinion is not good as fandyfire uv-s5, kung can give more light, but uv-s5 is better made and has better driver.
Charger http://www.fasttech.com/products/1421/10001638/1292100 and review: Review: SysMax/NiteCore Intellicharger i4 V2 Charger