I just bought that Hanns-G (without the stupid built in speakers) a couple of weeks ago and I LOVE it!!! Not trying to suck their sack or anything but this monitor is great. I don't do much hardcore gaming but I have played Starwars battlefront 2 and Civ4 on it... and it looks good to me.
One thing you might want to consider though...
I bought this monitor at a local computer store after checking it out on New Egg for a while. I ended up paying about $20 more... but it turned out to be $20 dollars well spent. The first one I got had 1 stuck pixel just off the center of the screen. It wasn't terrible, but once I noticed it I couldn't help looking at it... all the time. That's where the extra $20 comes in. The store that I bought it from would let you exchange it if it was "faulty"...and they consider 1 stuck pixel faulty. They exchanged it for a new one and that is the one I have today... it's perfect. New Egg, on the other hand, usually warranties their monitors through the manufacturer of the LCD and not through New Egg... and most manufacturers (including Hanns-G and Samsung I believe) consider anything under like 5 stuck/dead pixels normal and won't exchange it. So if I would have ordered that Hanns-G with 1 stuck pixel through New Egg, I would have been "stuck".
As far as I know, any time you get an LCD you take a risk that it will have stuck/dead pixels so regardless of which one you choose, I would try to get it form a place that you can easily exchange/return it if there is even the smallest thing wrong.