Summary: Well, like the first poster, I have only been using the keyboard for a few hours but I think I can already see some benefits in the operation and general "feel" of it. Like that poster I was confused by the need to use both the USB AND the PS2 lead to get a functional and backlit keyboard, but that apart it seems good. I am slightly concerned that there is a "dry joint" somewhere in the lead set but since it is not causing any problems, I am bearing with it.
Summary: You note I've said first impressions "good" rather than "very good" or "excellent" or "awesome". I know I will almost certainly have to come back and write an update to this at some point after owning it for a few weeks. The size, spacing and action of a keyboard are things to be learned and adjusted to. An overall verdict isn't possible the day you get it. So this is definitely a quick overview, as it came out of the box. Can I mention the box?
Summary: Not only does this keyboard have Mechanical MX Brown switches, which have proved to be good for word-processing (haven't tried out the gaming aspect, yet) but it has 4 levels of brightness for the blue backlight, really easy to set up and control. It looks great, it feels great, it's a really nice medium size, it will fit on any desk-space. And the cherry on top is the full sized Enter key, because that's quite hard to come across among gaming keyboards.
Summary: I have been trying some of the games for Linux found on the Steam site. To my surprise, I found that a few games did not like my USB keyboard, so I bought this museum piece. It works perfectly, and is probably a little quicker than the USB one. Highly recommended to gamers, at least.
Summary: I love this keyboard. After at least 3 weeks of research and searching i finally took the plunge and order this, with cherry mx browns. I wanted a keyboard that would be suitable for gaming and long essays, and preferably blue backlit keys. Perfect! I originally was going to buy the new Razer Ultimate keyboard but there was lots of reviews about bad build quality. It was very easy to set up, just plug and play. Its great that it has the option of PS/2 or usb.