Got it two days ago, but didn't get home until today to try it out. I've been playing around with it all day. I can open 7 cards in RDSS. The 8th one crashed. It's fast and the screen is so bright even someone like me who had to enlarge RDSS on my laptop 35%, can see the readouts no sweat at the default settings. The downside for this is that so far I only get 4.5 hours on the battery, but I think I can increase this more by bringing down the brightness on the screen.
I can only bring up two screens at a time, but that's all I normally do anyway. With Windows 7 I can see all open races across the bottom of the screen just by pointing the cursor at the RDSS logo there. I LIKE this. And it's as light as a feather.