Pros: Fast

Cons: Without warning was not recognized in Bios. First drive I have had gone bad after 10+ pc builds.

Pros: Good Price, worked well (at first)

Cons: The scope, after very limited use, will no longer focus above the lowest (20x setting). Its as if the focus nob no longer engages.

Overall Review: This brand seemed to be a sensible purchase. big mistake! Its better to spend a little more for quality and a guarentee that will back it.

Pros: Worked great very early on.

Cons: After limited use this things start skipping and reloading discs.

Overall Review: Problem with the rating on this product here and on most sites is they are rated by folks very soon after purchase in which case they are 5 star. The problem i have found after my second set is after very limited use they start to malfunction reading the discs. I am assume either vibration or shock caused by the vehicle quickly takes it toll on the unit. Do your research to make sure you're getting a high quality item, these are garbage.