What's the difference then?
It would appear that the early batch of LCDs were V0. The latter batch were V3. There were some complaints with regards to the quality of the latter batch.
Personally, I think people got carried away with trying to identify good and bad panels by using these serial numbers.
The problem is that initially few people bought this panel. As news spread about its good quality more people bought it. It would therefore be logical to think that with increased sales, there would be increased faulty units in circulation.
What we can say for sure is that there were good older panels and good newer panels (confirmed by the recent posts in this thread, such as the one you posted about your good monitor). If the monitor was becoming a serious problem for OCUK (ie. too many returns/faults), they wouldve stopped selling these monitors. This has not happened. This would infer that this monitor does not have an unusually high percentage of faulty units.
For the record, I bought my DGM monitor quite early and it was perfect and after a few months of use, it is still working perfectly.