So, the Liteon 1633S isn't bad at all as you can see above -- it does under 10 PI for the first layer, then 40-60 PI for the second layer. Quite nice in fact.
But do a Land/Pit analysis (not posted due to time limits), it only gets a very good (4 bars out of 5).
But let's compare the Pionner to the Liteon and see how much better you can get with Pioneer's Liquid Crystal focused laser beam system.
Here's two scans of the Pioneer DVR-109 v1.09 on the Verbatim 2.4x DL+R MKM001 discs:
1. 2.4x DL+R @ 4x burn speed
2. 2.4x DL+R @ 6x burn speed
Both 4x and 6x burns look almost identical, with PI under 10 for the first layer, and PI around 20-25 for the second layer flat all the way through!!
Superb burns on any DVD burner for sure, and amazingly good for a DL burner! (2x-3x lower PI error rates on the 2nd layer vs. the Liteon 1633s)
Plus, it gets a consistant 5 bars out of 5 (excellent burn) on the Land/Pit analysis on these two discs!!
I have to do nothing more than to feed this OEM Pioneer DVR-109 from www.newegg.com the latest firmware and 2.4x DL+R Verbatim discs to get awesome DL burns!!! Yeah!!!!
This makes me extremely happy about my DVR-109 purchase, and it's a keeper for sure! I'll have to go back and redo my PI/PO scans on the Plextor for the other discs I've posted earlier later and repost, but I already have a good feeling about this latest Pioneer!
This also means that both the LiteOn 812S and the Pioneer A06 drives are not very good at PI/PO error scans, and should not be used to do so -- you definitely won't get any realistic results. (they get exactly opposite PI/PO graphs - one reports high PI in the first layer, the other reports high PI in the 2nd layer)
I bought the Plextor 716A specifically after reading the reviews at www.cdrinfo.com re: the close match between the PI/PO curve trends reported by the Plextor vs. the professional scanner machine they also tested just for scanning purposes. No point buying a scanner drive that doesn't match the trends reported by the professional disc scanner (eg. like the LiteOn 16xx series, which they said often doesn't match up at all).
Although my Plextor could be defective, thus giving low PI/PO error reports for whatever reason, I would like to think that the drive is good since the scans match those at YSS's Japan DVD burner review website for the Pioneer on Verbatim DL media.
Anyways, now what to do about two drives? I'll keep one external, the other internal as always for double-checking burns (always good to make sure the discs are readable in more than one drive when burning anything important).
But I'll have to hunt down a new external case now that both drives use more power than the A06 I had in the external case. The Plextor is definitely quieter at tray opening/closing than the Pioneers - a soft whoosh opening and closing vs. a clunk. The Plextor is quicker at detecting CDs and showing them in Windows; the Pioneer is quicker at detecting DVDs and showing them in Windows. Nevertheless, both drives take =forever= IMO to detect and show DVDs of any sort (we're talking many seconds to a dozen or two!) and are slow at this vs. a plain-jane DVD-ROM drive. But I can understand due to the fact that the drive is trying to detect which type, burnable/not burnable, DL or not, etc. on DVDs.
ME-320UF case 12v (1.8A max)/5v (1.5A max)
A06 12v (0.6A max)/5v (1.1A max)
109 12v (1.0A max)/5v (1.6A max)
716 12v (1.4A avg/2.0peak)/5v (1.4A avg/1.7A peak)
As I remember, some people had problems using their drives in external cases, with drives not burning correctly -- I'd definitely make sure you read the power supply ratings first to make sure you're not starving the drive!! Even a 0.1A difference may seem like nothing, but drives are sensitive to power fluctuations due to the sensitive nature of laser burning.
My updated good media list for the Pioneer 109/A09 is now:
=Single Layer discs=
1. 16x+R @12x Verbatim MCC004
2. 4x-R @ 4x Maxell TYG001
1. 16x+R @ 12x Memorex PhilipsC16
=Dual Layer discs=
1. 2.4x+R DL @ 2.4x, 4x & 6x Verbatim MKM001