1. the starter of this thread said his choice was between an imac and mac pro, not mini, macbook, etc.
Except he absolutely does not need a Mac Pro and can get away with a Mac Mini.
2. 8800gt may be outdated, but I highly doubt apple has anything faster on offer in the imac. desktop video cards require desktop form factors for cooling. If you don't like the 8800gt, get the ati card.
But he doesn't need the power at all... The laptop cards in the iMacs would be fine.
if you want to have an apple with the opportunity to swap in newer video cards down the line then mac pro is the only choice.
Provided they actually work.
4. again, if you want your desktop culttered with a ton of external drives imac is fine if you need lots of storage.
What's the difference between a Mac Pro tower and screen sitting on your desk and an iMac with an 8-bay hard drive enclosure?
He's using it for making documents and surfing the Internet. He doesn't need more than a Mac Mini or iMac.