Brilliant king size mattress, just perfect for me. I have back pain and sciatica, buying new mattresses is a general nightmare as I like softer mattresses but my back doesn't. This one however is the best of both worlds, firm enough to keep my back supported and happy, and the pillow top gives me the softness I crave. I am usually a side sleeper, with occasional on front. But I can even drift off in all sleeping positions now! 
This last month has been full of the best nights sleep in about 6 years!!