What a great job you did with the website.
I've seen websites with a similar setup/layout, but 6sync looks fresh and unique, with its own spin on things. I like how it is done with attention to detail and proper sizing.
The absolutely only issue for me was the complexity to actually find the pricing information/plan comparison chart.
When you click on "Which Plan" page (http://www.6sync.com/which-plan/
), you can see a brief description of plans, but the information seems limited without actual details (at least basics: RAM, DISK, PRICE), unless you click on a Sign Up page. I think this information should be a little more spread on the site and more accessible.