I believe White Lotus is a great brand. I'd like to get an organic mattress, and I think that's the brand I would get. Do a google search I'm not sure what the website for the store is.
Where are you located? We bought ours locally in Michigan from this company: http://www.downtoearthhome.com/. The company uses all organic and the Amish in Ohio make them. We have one each for our boys and one for ourselves. We used our tax refunds because they are not cheap but neither are Tempurpedics and I'd rather pay more to have a healthy mattress. We spend 1/3 of each day breathing in whatever these emit, so I did not want anything with chemicals.
The shipping is the biggest issue. That's why I looked for a local company.