My opinion, having run Vista for 3 months on a desktop, is pretty similar to this diary writer's.
For what it's worth, I like the change to an opinion/diary format vs the review format. The bottom line for Vista, as I see it, is whether or not it's worth the investment in hardware and the OS to upgrade. Here's a few of my own experiences that have convinced me that it's not worth it for most users:
I have transferred 200 gig's of music to different folders on the same hard drive with both XP Pro and Vista Ultimate RC1, many times on each, and seen no difference at all in transfer speed/time. (Anyone who sees an hour of transfer time with 25 gigs on XP has serious problems, as both Vista and XP take about 30 minutes to transfer my 200 gigs to a new folder on the same system, whether it be the same partition or a different one. Now if you transfer across a domain, completely different situation. But still this is a bandwidth issue, not an OS issue.)
I spent months fighting to learn the new interface and finally changed it back to the good ol' classic interface. I don't see any advantages to the new interface, and frankly it's all about what is comfortable for the individual. The interface itself has nothing to do with how the OS performs. It's all personal preference whether the new interface can be used faster than the classic interface. For me, its not worth it to wait until the new interface becomes second nature. I know classic. I like classic. I can find things as fast or faster using the interface I know and like.
I grew so wary of the constant security advisor popups that I shut them off entirely. I don't need an OS to protect me from myself nor force me to make the decison more than once to install something. It didn't protect me from anything, but then my AV and spyware programs do that.
If anything, Vista Ultimate is slower than XP overall. Programs hang at startup. There is so much useless crap running in the backround that the entire system is slowed. Sure, you can tweak it by turning off rarely used or never used features, but then why spend the $ for Ultimate in the first place?! I'm a speed freak. Give me speed or give Vista death!
I'm constanty reminded by Vista that I don't have enough system resources to do everything Vista is supposed to do, although I have a pretty decent system. While a Core 2 Duo or Quad Core may resolve that issue, people need to know that a dual core (even overclocked to 4.1GHz) won't suffice. I have a C2D on order and will know in the next week the results of Vista Ultimate RC1 with an X6600.
Setting up Vista to run with Windows 2003 Small Business Server is a total pain compared to XP.
Drivers are STILL NOT available for many software and hardware configurations. I still can't find updated Gigabyte drivers for seeing the other hard drives, etc.. More than a minor inconvenience when you rely on the computer for your job.
I've said it before and I'll say it again: I expect Vista to be the biggest flop since ME. Vista will have it's share of die hard followers, but the majority of people will see no benefit whatsoever over XP.
And for the record, 80% of our customers prefer to set the XP interface back to classic. I don't expect this to change with Vista. When customers ask my advice, I'll recommend XP over Vista for everything except possibly media center systems. Of course, I'll build anything they want as it's their problem, not mine. 🙂