Re: Past the peak
"You can be as productive on Office 2003 and XP."
I used to think the same until I actually started working with Win7 and Office 2010. Vista and Office 2007 were ok but an annoyance - the ribbon on Office 2007 didn't quite work as promised and I still find now that I struggle to work well on Word 2007.
However - Office 2010 really seems to have got it right the Ribbon has been in improved in little ways, File menu for example, and to me those little changes that make applications easier to use are what it has made a big difference to actual productivity. In terms of nice little basics in Win7 then windows snapping to half the screen and the screen grab tool make everyday tasks much easier than in XP / Vista.
In XP I have to have little applications installed to perform these tasks and in my corporate environment I'm not allowed to install those anyway. Building basic helpful tasks into the OS really helps productivity.
And for any accountant out there, Excel with more rows than the 66k limit definitly helps productivity.