"Word has always been poor for any form of Long Documents. "
A few years ago, a few people starting their third new company (serial entrepreneurs) wanted their IT set up from scratch. We agreed in the infrastructure services required, and I started talking to them about Windows 7, but saying they'd need to find someone to support them. One of them stopped me and said "What do you use?" I showed them my Linux laptop running LibreOffice and they said "Right, that's what we'll use." A few months later I got an email to say that they had finalised their business plans, running into hundreds of pages, including spreadsheets, graphs and all the trimmings. They said it was the first time they had had no trouble at all generating large complex documents. It was also the only time that I have ever had an unsolicited positive response to technology.