I have EQ7 from what I have read on here it's alot better and offers alot more than EQ6. If I was going to pay 75 I'd just save my money and wait until Elenor Burns has it on sale on her website for around 100. You can have it registered on any two machines at one time; if you want to put it on a third you just have to deacitate it on one of the other two. I'd pay a little more to get a lot more.