I've tested two of these, TLA0001 and TLA0101. Between them, I've burned 50-75 4.7gb single layer disks, Maxell 8x +R, CMC Magnetics 4x -R, Prodisc 4x -R, Ricoh 4x -R, Ritek 8x -R, Taiyo Yuden 8x +R, Verbatim/MCC 4x-R and 16x +R. I've burned at all speeds 4x-16x, with and without Vari-Rec, PoweRec, AutoStrategy and BufferunderrunProof. To my satisfaction, I've achieved the best results I can. I've seen consistent patterns emerge. Further testing produces repeats of what I've seen before.
- Both have been problem free.
- Both seem to perform identically.
The best 8x-16x media is a tie between the Taiyo Yuden and Verbatim. Those were the only two that burned at 16x. The Maxell 8x +R gave pefectly acceptable results at 12x speed for third place. The only problem media was the RitekG05 8x -R, which gave "Not Good" results for Q-Check TA test samples.
The PX-716UF has USB2.0 and IEEE1394 support. I was unable to achieve 16x burn speeds with IEEE1394. The upper speed limit is about 14x with IEEE1394. With USB2.0, I achieved 16x with PoweRec="Off." With PoweRec="On," the peak burn speed was 15.1x.
Using 8x +R YUDEN000T02 at all speeds between 4x and 16x, consistently the best burn occurs when using firmware V1c04 at 16x with the IEEE1394 interface. The attached scan was typical (not the best), was from an actual burn, not a write transfer test.
Compared to the posted scan, here's how other burn speeds fared with other firmwares, the same file and media.
4x, 8x --> about the same result for PIE, POE as the 16x scan posted, but not as many instances of "EXCELLENT" or "VERY GOOD" on the Q-Test TA.
12x --> not quite as good as the test scan, mostly similar, slight upturn at - the end of the burn, typical PIE max = 50.
16x/USB2.0/V1c04/PoweRec="OFF"--> similar to the 12x burn with slight upturn at the end, sometimes a few PIF errors, PIE max about 50. Not as many instances of "EXCELENT" or "VERY GOOD" on the Q-Test TA.
16x/USB2.0/V1c04 --> similar to the 12x burn, max's at 15.1x burn speed, no PIF errors with PoweRec="ON".
12x/16x burns with V1.03 firmware usually have higher max and average PIE than V1c04.
The best burns happen at 16x with Firmware V1c04 and IEEE1394. With PoweRec and Autostrategy "ON", the max burn speed can be anywhere from 10x to 14x. Nevertheless, the actual burn time remains competitive to true 16x. In the case of the scan posted below, 6:49.
PoweRec does lower the speed somewhat, but reduces max PIE and POE, guards against PIF, and returns more "EXCELLENT" or "VERY GOOD" on the Q-Test TA.
Note: V1c04 firmware is BROKEN! You can use it to burn, but it corrupts DVD playback or ripped files.