
Wow! With Solaris 10, Sun Microsystems has done a marvelous job of bringing Solaris fully into the x86 world. Gone are the days when Solaris only runs on Sun hardware or when it only runs well on Sun hardware. Solaris 10 comes with greatly expanded off-the-shelf x86 hardware compatibility and a license that is hard to beat. It's a binary right to use and Open Solaris, the open source version is soon to come. IT Managers that have been wanting to bring a stable, scalable Operating Environment into their network infrastructures, but who have been unwilling to commit to the Sun hardware platform, for various reasons, are now free, pun intended, to bring Solaris on board and to run it on the hardware of their choice.
Let's see if I have this right, you didn't have enough time to work out how to use it, but you found the time to bitch about what you thought was wrong about it! The issue about the long install time has been hashed out here more times than I care to admit, and has been fixed in the last build of Solaris Express (which will become part of Solaris 10). It took me around two hours to install Solaris 10 (Full Distribution) on two machines.
The "slowaris" bullshit is also getting old, the last time I looked any OS doesn't run optimally "out of the box". People who use the "slowaris" argument don't know how to use or tune Solaris. So how did you evaluate it if to use your words "I didn't have it installed long enough however to really say whether I like it, I didn't get a good enough feel for it. I certainly had few complaints from what I saw though."
Maybe if you read some documentation (docs.sun.com) or asked for some assistance, your issues could have been solved.