I reviewed one of their gamer laptops last year, comparing it to an Alienware gaming notebook that Alienware sent me.
It boiled down to this: the Alienware had much nicer fit and finish - it was like a BMW or Mercedes or an upper-range Toyota. The CyberbpowerPC just screamed "Components Made in China for the Cheapest cost possible" and it looked a little rough in places - think Hyundai or Kia or General Motors.
Still the Alienware notebook cost 30% more and was no faster; both used the same internal components.
For my money, I would get a CyberpowerPC gaming notebook over an alienware notebook.
-Llama