It has been 5 nights sleeping on our new Gel Memory Foam Mattress and so far it has been a good experience. We purchased our last memory foam mattress from Great Offer Stock and it was great for 11 years.....and then we needed a new one! Industry average is 10-12 years on a mattress and if you take into consideration germs/bacteria I think it was quite long enough! I chose the Gel Memory Foam based on the rise of popularity of these mattresses and certain other companies touting them all over the net but at twice the cost. This mattress has all the same features and appeal and most often is on sale, so it was a great deal. There was definitely a need for the 24 hours of airing out and it could've been even a little longer but we couldn't wait any more, The smell has mostly dissipated and it is totally to be expected with any foam/gel product. I chose the Firm to see if we could get longer life out of it, it is perfect for me although I think my husband would have preferred the Medium/Firm. I don't find it too firm at all, it still has give and really supports the whole body. If you are considering I say go for it!