We ordered and received our King size mattress about 2 years ago and have no complaints. It is the most comfortable mattress we have ever owned.
Living in Glendale, AZ where the summers reach 115 degrees, I worried about becoming too warm. To my surprise there hasn't been a problem. The latex stays comfortable for my wife and I all year round. I would definitely recommend.
However, before you go make sure you know what you want. Read on the internet all that you can about mattresses and how they are made. Be a knowledgable consumer instead of expecting someone to teach everything to you as you shop.