Well, I was forced to buy Ultimate for my personal machines, because I needed the language interface. I use a German keyboard, and even if I could easily obtain an "English" keyboard here, it wouldn't do me much good because it is impossible to buy an English version of Windows 7 here.I have tried. Of course, I could have ordered a keyboard and Windows 7 from elsewhere, in English, but that is always a hassle, and, as things are, if I need the German interface for some reason, I can just switch back to it.
Using the standard German installation, and adding the English interface pack is the only sensible way to go. I know quite a few people with the same problems, so they are also forced to buy Ultimate.
Not really a big deal, but it is extra money of course.
Regards....Mike Connor