Pro’s – you will have the latest edition that you can brag to your mates about.
Cons – not only is the software going to cost you a pretty penny to buy, but as mentioned you really need a decent amount of memory for it to work as desired and may cost you a extra hit in the pocket for a memory upgrade. Having used the enterprise and professional editions and office 2000, XP, and 2003, I would say don’t waste your money on the new one and get a older version as it’s unlikely you will really notice any difference. So is there a reason you need the new version rather than a older version?