Hi Fili,
I think my reply to your other post here includes most of the information I would reply with here as well and should be helpful 
Some of the pros and cons of latex are here and the pros and cons of memory foam are here but in the end it would be a matter of personal preference. No matter which you choose though … I would make sure that it is the type, quality, thickness, and firmness of either material that would be the most suitable for your needs and preferences.
Phoenix