Visual Studio Refactoring Tools

I am using MS Visual Studio, and I desperately miss the refactoring and productivity tools in Java IDEs. Whidbey, the next VS release, will include some of these features but may not be released till the fall. Here are the tools I'm considering buying/using:

a vs plugin from idea, the people that raised the bar for java developement. (update: I tried resharper and had to uninstall it due to poor performance and increased memory consumption)
$99
http://www.jetbrains.com/resharper/

$99
http://www.xtreme-simplicity.net/

free w/ source code
http://www.codeproject.com/dotnet/SMRefactorAddinArticle.asp

Also someone told me to check out SharpDevelop, a free alternative to MS VS