I am hoping Parallels is listening here. This is a late reply but I came across this thread when considering whether to update to PD11. My biggest qualm as stated above is that if I choose not to subscribe any longer--for any reason--the software stops working at the end of the subscription. This is NOT stated on the version comparisons page, but it should be. This comes across as deceptive marketing. Like others, I would gladly pay for a subscription if I were allowed to keep the last version of the software for my subscription, but I will not be pushed into a corner and have my software held for ransom. Looking at Virtual Box now. Please come back to your senses.