Very good build quality. Bulky, being 3 battery, but the pay off is longer life between charges. The design isnt to everyones taste, but i kinda like it. Screen and settings are easy to navigate, and for 34.99 this mod is a no brainer, which gained good reviews when released. Using with valyrian 2, triple mesh, and its flawless. At 100 watts, its still in 2nd gear. A bargain.