Hanns-G are an ok make, I got one with my desktop. Apart from a dead pixel i have no complaints about it at all, but it doesn't compare to the likes of ASUS or Samsung. I can't comment on that specific monitor, i have the 19" HU196D.
So, if it's a cheap-ish option i'd go for it, they're descent enough, but if your looking at spending a lot anyway, consider something else.