Upgradation of Internet Explorer 7

I posted this hoping that I’d get comments from users who are using IE8 or IE9 on Vista. I find IE7 annoying and I want to upgrade to either version. I want to hear from people regarding their experiences on using IE 8 or IE9. I am considering an upgrade to both versions but still quite reluctant since I’m hearing bad reviews especially for the IE8. I heard that IE9 is much improved from its earlier counterpart, which is IE8. I’d appreciate it if you share with me problems or issues with both or either of the IE8 or 9 that you experienced so far.
