I am a computer technician and i work at a government help desk. When Vista came out it was pretty buggy...and incredibly annoying, i avoided it for the longest time. I then started to realize that the problem wasnt vista...the problem was the PC's that it was being run on, Slow, underpowered Compaq, HP, and Dell crapfests that barely meet minimum spec. I decided to try it on my system at home, which is a nice PC (even if it is over a year old)...and so now i can definately say that vista is pretty cool....IF and only IF your hardware can run it efficiently.
Also, most of the bugs are now worked out...SP1 will be a godsend. however compared to XP, home basic and home premium are rip offs....its not worth buying to me unless you get Ultimate or at least Business. and you have a
kick@s$ machine to run it.
some things are actually faster on vista too, browsing teh internets is incredibly quick to me, and running office 07 seems to be enhanced over xp too