Hi Ocsheh,
While there are too many variables and individual criteria involved for me to make any specific recommendations either for manufacturers/retailers or for mattresses … the better options or possibilities I’m aware of in and around the greater Los Angeles area (subject to the quality/value guidelines here) are listed in post #2 here.
Latex is certainly a heavy material (similar to higher density memory foam) but there are also many latex mattresses that are one sided and don’t need to be flipped … just rotated. For latex mattresses that can be flipped it’s normally an easy enough job for two people.
Phoenix