Microsoft has clearly let it's best efforts go elsewhere with regard to Excel on the iMac.
I use Excel on both Wintel and iMac on the same spreadsheets. The differences are striking.
The market is simply crying for a robust, powerful speradsheet that can take full advantage
of the capabilities of gigabytes of RAM, hundreds of megabytes of mass storage, without crashing,
freezing, randomly choosing it's own variety of fonts in charts, then, locking these same chart/sheets
out from even saving, because it can't keep up with all the fonts IT CHOSE within the charts.
I have used Multiplan, Lotus, Excel, etc. It appears that Microsoft kept their quality in their products
just long enough to force other GOOD software companies (Borland) out of business before relaxing,
resting on their laurels and leavng the door open only to open source applications that cannot truly
offer mission critical alternatives.
I would love to get all Microsoft products off of my iMac, if I only could.
They are the least reliable, most crash prone products in existence.