In general we don't bother with what installer the software comes since we repackage everything into MSI.
Maybe you think that Innosetup is fine, but every organisation that has a software distribution system in place, like we do with SMS, standarizes on MSI/Windows installer, because it is a defacto open standard when installing Windows applications.
If you look around you, for example on
http://www.appdeploy.com , you will find that script-based installers are getting viewer and viewer.
If you fancy having MyDefrag more widespread used, then you should lowering the threshold with MSI.
BTW, we are not a company, just a big school.
I understand you view, you want a no thrills dirty installers, we want standards.
It's a pitty that you will not let us repackage your excellent program, my offer in helping you with an Windows installer package still stands.
Reg, Henno.