Visual Studio 2008 _best_

Despite its age, a wealth of information remains available for Visual Studio 2008:

Even when it was current, VS 2008 had frustrations: visual studio 2008

The IDE introduced the "Cider" XAML designer, facilitating the creation of rich user interfaces for Windows Presentation Foundation (WPF). Despite its age, a wealth of information remains

: For the first time, developers could use a single version of Visual Studio to target multiple versions of the .NET Framework (2.0, 3.0, and 3.5). This allowed teams to upgrade their tools without immediately forcing an upgrade of their production servers. Despite its age

A classic, robust, and historically significant tool. Retired, but never forgotten.