I have been a VMware user for many years and have been very happy with the product. But I don't like the fact they dumped their team and moved the development to China. I thinking about switching to parallels before the end of the month to take advantage of the free windows 10 upgrade for my VM. I have windows 10 running in VMware but nor sure how well it will work if I convert it to parallels down the road. I would rather wait until I have to switch but don't want to shell out the money in the future to buy windows 10.