The most important feature is that it has an excellent user interface with some very helpful features like "Compare two different ways" which lets me do comparisons of text documents or pdfs etc without having them open at once - this also helps reduce screen clutter when I'm working from home (or otherwise) where there could be more than one person logged into my computer simultaneously! It's easy enough even if someone else doesn't know how to use computers well/at all but would benefit greatly by learning as they go along too; so far no issues i've had were due to lack of support either though have only used their online help guide occasionally over email since we are small business owners who don't always need instant answers straight away anyway.