I have an MacBook Air which I've had for a few months but I've only started using it more recently and now I'm about to go back to work after mat leave I've started using it for work things. I'm preparing some text documents and some spreadsheets which i will be sharing with colleagues using PCs. What is the least frustrating way of doing this? I've downloaded open office, what's people's experience of using it on different OS's? Or should I just bite the bullet and pay for Office for Mac?