QSnexus--Thanks for the mention of the Ritek G04's. Decent enough price for me to be there. They always burn at 4x for me with no problems.
I've totally given up on the cheapo junk, white label LONGTEN from Shop4Tech. I tried.....I wanted them to work, and, at 2x they "sort of" usually came out OK. 4X.....no way.
For me, it is worth it to pay the extra $$'s to know they will burn at 4x just fine. The time saved burning from 2x to 4x is well worth it.
I've got a BTC IM1008, BTW. They seem to do a nice job releasing firmware. I think I just got the most recent yesterday....... 0658?
--Randy