Hello.
Done some haphazard investigations of these screens. Seems like there are three versions out there (ther are also in the database now). The only new thing I found out is that the BSNH variant has exactly the same specs as Philips 190B5CG / 190B5CS. The database doesent list what type the Philips panels are but the BSNH is listed as S-IPS. This sounds all reasonable doesent it? LG Philips panels would find its way to LG and Philips monitors. The other thing I noticed is the fact it could be a NEW type of S-IPS panel. The specs are a bit higher in viewing angle and contrast ratio. As a sidenote it seems like the popular LG Philips S-IPS screens from Fujitsu, Lacie and Ilyama has the old specs. NEC monitors doesent match any of them. Of course they all could have been "updated without notice" ad the infopages often claims.. although they usually dont "update" screens, more like "downgrade" them.
I've lately been thinking about commercial reviews of items. How they work.. I mean sometimes you read that "the products was bought off the shelves and tested" but most often nothing is mentioned. And I've seen a couple of reviews that gives L1930B quite a good grade. For instance PCWORLD
PC World does them tests often. They tend to be biased toward american brands but other than that from my experience they are fairly decent tests.
I also saw a swedish magazine where L1930B got better grade (also recommended purchase) than Lacie Photonvision even though they got a fairly similar "calm image" impression from them both. I kind of doubt the reviewer knew that they could have the same kind of panel in them so I guess what he saw would be the S-IPS effect. 
These tests could just mean that LG sends the best type of screen to the testers and then sell the junk like the ones with TN panels or the old type of IPS panel .. well.. for all I know the older variant could be better than the new one. However, it all just strenthens Totamec's disaproval of LG in general. 