I swore I would never buy another Lite-On burner ever again because of their burn quality but yet here I am.
I picked one(124) up today from Micro Center. I tested the drive using some TDK dual layer I had which I knew already were iffy. These disc will burn and verify using my Pioneer and a NEC I have ok. The quality scans are not good so I don't even use the disc for games.
The Lite-On burns them but wont even read back past the layer break. I hope it works better with Verbatim. So far it looks like the same Lite-Ons I grew to hate.
Make sure you're using somewhat up-to-date firmware. I know my Lite-on burns my TDK DLs just fine, scans nicely, but it didn't until I updated the firmware. I've had pretty good luck with the AL0H firmware, although AL0L is newest.
For the record, I bought my Lite-on iHAS124-B last year in November, was lucky enough to get a B. =D