My recommendation is to stay away from cheap chinese imports. If you do go that route, I would suggest getting it from Costco. That way you can return with little issue when it doesn't do what you need it to do. If it does work, you got a good deal.
I have never heard of Tempflow. How did it feel compare to the Cloud supreme?
There are a million fly by night operations selling the 'better than Tempurpedic at a fraction of the price', that are here today, gone tomorrow. So, buyer beware.
Good luck. And remember, going cheap sometimes costs more in the long run.