I've always installed software to the default location authored by the vendor, usually somewhere under "c:\Program Files\". Most installation software vendors (InstallShield, Wise, etc.) tout that location as an "industry standard best practice" for installing software on Windows systems and point to Microsoft's Application Development Guidelines. Now I'm working on the next release of some software that has been installed to a folder on the root of the hard drive for 25 years (that's not a ty