C++ Builder 2007

[supersaiyanzero]

It's a lot quicker and the IDE has definitely improved in terms code
insight, performance and break points. So far all my projects have
converted without any problems at all.

The only downside to this (like Delphi 2007) is that if you have Aero
enabled on Windows Vista, the tool palette, object inspector,
structure, model explorer, etc... leave a smudge on your IDE when you
unpin from their space. This prevents the user from seeing the form
components until you either click around on the form, this only
happens when the palettes are fly in and out on the ide. You can
disable this by going to compatibility and ticking disable DWM for
this app.

Definitely worth the upgrade.