Hi I use Parallels 6 on my mid 2010 Mac Mini to run Win XP Pro. I have recently "upgraded" to Lion on this machine, and keep getting the blurb to upgrade to Parallels 7. Does it really offer anything worth having? The Parallels website has much, in fact too much stuff on it about Parallels 7, but I can't find anything that would inform me as to what the differences are between 6 and 7. Anybody gone from 6 to 7? was it worth it? and why?