Lynn Allen just posted on her BLOG about saving space on the screen (using 2k7) by moving the tabs to the topof the screen. That is enough for me to upgrade.
However, when I went to purchase the upgrade from 2K4 the price is $1795. That is far too much for this single man office. That is 80 hours of work for me; and there is no way I can justify that kind of expenditure.