My girlfriend occasionally works from home, and her office use a remote access system that only works correctly on Internet Explorer. I have therefore installed Windows 7 RC on my MBP for her to have access to IE.
I've not used it much, but from what I've seen, MS is still miles away from an OS that comes close to OS X. It still isn't easy to navigate around, it still isn't intuative, it still is a mix of styles / methods to do similar tasks in different areas / applications / tools. It is still bloated, it is still resource hungry and it is still not as user friendly as OS X.
MS needs to raise its game. With Apple gaining market share, new OS's such as Google Chrome OS and more user friendly versions of Linux attacking Windows, it needs to be a lot slicker.
With multiple versions, all with standalone, upgrade and OEM builds, each with complicated pricing, it is a nightmare.
Some say MS is clever my allowing everyone to download the RC and make it work until June 2010 is clever, but I think they've taken a huge risk. Yes, please will gradually get used to it and will want their PC to continue to work post June 2010, but with high ticket values, it will surely lead people to either look for cheaper alternatives or obtaining ways of getting the OS for free (either torrent a full version or circumventing the RC 'end of life' system).
I can't wait to get Snow Leopard to get a 'better Leopard' and then see what Apple has in store next.
I guess what will come after SL will have tighter integration between MobileMe and iPhone (iPad?) OS X, as well as bringing new useful tools, streamlining workflows further and exploiting GCD / Open CL further to provide a slicker overall experience.
After Win 7, MS will be expecting PC's to have six core CPUs, 16 gigs of memory and a 1 TeraByte HD as standard to run it's successor!!
Phil