I've looked at the masterlink but, have ruled it out since it can only burn at 4X. I burn a lot of CDs of my stuff and don't want to have to wait for a 4x burner. No matter how you slice it, that burn speed blows. I know there are many here that love the thing but I don't see any advantage over using a PC. Just my opinion.
However, if I were going to burn my 2 track mix-downs to send to get mastered, I would burn at slow speeds but a PC burner can do that as well.