I got the demo on Steam yesterday and gave it a try, but only played 1 match so far. Seems ok, just a bit weird getting used to where all the info is (I still occassionally play 2008 which is laid out slightly differently) but not much seems to have changed overall from the older versions other than the addition of the 3d match engine. From the looks of it, 2010 is just going to be a polished version of 2009 (which I didn't bother getting as I'd heard it was fairly buggy) as they've had a year to get the 3d engine working better and iron out any kinks.

I may end up getting it but I'll probably give the demo a little more time before I make any final decision. I have to admit that I didn't really like the tactics editor that much, although I suppose it's good to get you started and you can fine-tune your tactics from there, but perhaps it will grow on me as I use it more. I do think it'll play a little slower than previous versions (it's been an on-going trait as the series has worn on, not something I'm too keen on) unless you choose to ignore all the media stuff, etc. The 3d match engine also makes me want to watch the entire match now for some reason, rather than just the key moments, and at a slower speed which will also slow down the whole game experience.