Everspring CD burner failure

hello one and all.
i work in a computer shop, and im posting to inform that out of 2 Everspring 40x12x48, both is extemly unstable.
The two Drives both eventually bring windows to a complete halt, and take forever for any data flow, i done a setup today and it told me Windows would take 208 minutes to install (ususally 30-60) and makes an awful noise when it comes to speed, when it runs and when it slows down.

we`re lucky enough to get a good returns policy, but i wouldnt want anyone else to have the probelems ive been having returning drives

P.S. Also anyone with one of these drives please correct me if im wrong, but im quite sure the drives wernt benchmarked at the labs.


Preep