I recently purchase this king size serta mattress from National Mattress in Markham. I think it is the best investment I made for the best quality mattress I recieved. The store is full of choices from plush to extra firm as per your choice. We were on tight budget as we did not wanted to spend 1500$ but needed premium quality as well. The price is way affordable than any other fancy mattress store(trust me because I went from stores in Scarborough, Oshawa, Whitby) and really enjoying the half price deal I got due to labor day special. The extra firm quality is high and my resolved my husband's back pain now Iam enjoying the most comfortable sleep during my pregnancy. Since I liked the quality and great service from this store and went ahead to buy Queen size serta mattress and it has a premium quality too. I would recommend this wholesale place for the purchase of your mattress if you are on a budget but still need quality stuff.