Unfortunately the compatibility list that Liteon supply has not been updated for best part of a year and as such nearly all that are listed are no longer available as faster speeds and different makes have come out.
That being said Liteon in Taiwan recieve over a 1000 disc samples of currently available media from the EU office every quarter which are tested for compatibility.
It also pays to be aware of the Media ID as Trak101 has shown (TY, MCC, CMC etc) because 1 brand can source discs from different factories, so for example you could buy some Sony discs that will work fine then you buy another pack and they don't do so well because they have used a different dye (TY, MCC etc).
There is plenty of info on this in other forums here.
I'm in the UK and have had no problems with Datawrite Classic Grey and Titanium in both - & + R (CMC and MCC). For RW I use mainly the + format and Both Datasafe and Phillips have been good (can't recall the ID but can supply). The worst I have used was brand called budget.