Seems like most of the people prefer Tiger over Vista.
But
1. Finder just cant compare to Window Explorer
I hate finder. Managing files with finder is not seamless. For example renaming a bunch of files in sequence, windows does it, but on Tiger i need to resort to some Apple or Automator scripts. Also finders does not do folder preview.
Traversing through a deep folder trees on finder is a joke. The finder window scroll horizontally thus we lose track of the the parent folder after going several layers down into a folder tree. That just sucks. Windows explorer on the other hand a navigation pane and a display pane to ensure that we do not lose context no matter how deep we go.
2. Spotlight is slow..slow
Admit it, spotlight it's real slow, and most of the people in the know uses
Quicksilver as a day to day launcher. Vista has a similar implementation of spotlight
(whatever it is called) is just as bad.
3. Mac OS doesn't do games
How many times a day do I need to reboot into windows (vista or not) to play a game or 2 of counter strike. No chess doesn't cut it. The only decent game on the Mac is World of Warcraft, and that doesn't run as well as it does on Windows
4. iPhotos is great and all but..
I am not a tidy freaks. I do not want to tag my photos nor digitally enchance it. I just want to drag and drop it into a folder and call it a day. I just need to know that the photos will be there if I ever need it. So I also do not want to wait half a minute for iPhotos to load in order to email it, set it as my IM picture or desktop background. Here it where Window's Explorer comes into handy, it does just that. Finder on the other hand, is just not ment for organizing photos or videos... and one of the reason is because it doesn't do thumbnails.
5. I love Frontrow and all.. but Media Center it's really better
Frontrow is cool and all, but the Vista's Media Center Functionality does TV time shifting and recording and alot more. In my opinion that is the whole point of hooking up your compuer to your shiny LCD tv is at least to be able to watch live TV . No I do not want to buy TV shows from the iStore when they are in fact available free on air.

But
1. Finder just cant compare to Window Explorer
I hate finder. Managing files with finder is not seamless. For example renaming a bunch of files in sequence, windows does it, but on Tiger i need to resort to some Apple or Automator scripts. Also finders does not do folder preview.
Traversing through a deep folder trees on finder is a joke. The finder window scroll horizontally thus we lose track of the the parent folder after going several layers down into a folder tree. That just sucks. Windows explorer on the other hand a navigation pane and a display pane to ensure that we do not lose context no matter how deep we go.
2. Spotlight is slow..slow
Admit it, spotlight it's real slow, and most of the people in the know uses
Quicksilver as a day to day launcher. Vista has a similar implementation of spotlight
(whatever it is called) is just as bad.
3. Mac OS doesn't do games
How many times a day do I need to reboot into windows (vista or not) to play a game or 2 of counter strike. No chess doesn't cut it. The only decent game on the Mac is World of Warcraft, and that doesn't run as well as it does on Windows
4. iPhotos is great and all but..
I am not a tidy freaks. I do not want to tag my photos nor digitally enchance it. I just want to drag and drop it into a folder and call it a day. I just need to know that the photos will be there if I ever need it. So I also do not want to wait half a minute for iPhotos to load in order to email it, set it as my IM picture or desktop background. Here it where Window's Explorer comes into handy, it does just that. Finder on the other hand, is just not ment for organizing photos or videos... and one of the reason is because it doesn't do thumbnails.
5. I love Frontrow and all.. but Media Center it's really better
Frontrow is cool and all, but the Vista's Media Center Functionality does TV time shifting and recording and alot more. In my opinion that is the whole point of hooking up your compuer to your shiny LCD tv is at least to be able to watch live TV . No I do not want to buy TV shows from the iStore when they are in fact available free on air.
Don't cha just wanna agree with me?
(Note: I am a everyday MAC user as well, but I feel that Vista is really as good as or if not better than Tiger)