Here is just a taste from my experiences, 2 cents take it or leave it. The toshiba and panasonic drives are ok but I found a lot of my dvd players hate the disk these 2 record. They are also kind of picky about what type of dvd disk you put in it. I have a pioneer a03 and all I can say is WOW! I have put all kinds of dvd disk media in it, it recognise it and records it properly. I read somewhere that pioneer is going to try and adopt every type of recording that it can into its drives. I havn't tried a r+w disk yet, but at this point I don't see why I would want to. Another thing about the pioneers are that an update to the firm ware should give it the ability to read a r+w disk if the need arises. Like I said ,at this point I have no idea why someone would want to. The ao3 is just like a cd writer except for the fact instead of burning cd it does dvd. The rw disk works just like a cdrw disk, infact nero5.5 has added support for dvd-r drives. Another thing I didn't like about the other drive was their noise levels, way to b52 sounding. the pioneer is nice and quite, cant even tell its there.
As for the disk from this place, They are great, I ordered some 2 weeks ago as a test batch, so far I have been able 2 duplicate every dvd movie I have thrown at it. and not a coaster yet. I also burned a dvd full of mp3's ( over 800 songs on one disk) it works perfect. Go ahead and take the plunge guys you won't regret it one bit. Also with these drives I would really suggest getting the retail box, the added software is worth the extra bucks. also cloning a dvd is a snap( such as green mile)