In the last 6 months I've had 3 different king size Serta mattresses...2 Trump and 1 Vera Lang. Both of these developed sunken spots in a very short time. My husband and I are not large people. I weigh 110 and my husband, 130. I'm now searching for a mattress again and am so confused at all the reviews I see online. I looked at a memory foam mattress today, but when I read the pros and cons, I don't think this one is for me. Does anyone have any suggestions for a good quality mattress, especially if anyone has purchased a mattress recently. I would appreciate any suggestions.