The Bottom LineAS4 and AS5 are the softest models by Amerisleep. AS4 is medium-soft while AS5 is soft, both considered suitable for side sleepers and lightweight stomach and back sleepers. Heavier persons complain of excessive sinking due to soft foams in AS5. The Amerisleep AS4 ranks better for overweight persons who prefer a soft feel. Loom And Leaf ranked best of the three for its superior value for money. The Loom And Leaf responsive foams adapt to your body curves quickly and keep you comfy in all positions. Being 12-inch thick, it has been found suitable for heavier sleepers as well. The hybrid construction and three firmness levels (soft, medium, firm) make Loom & Leaf an equally good choice for side, stomach and back sleepers. The Amerisleep AS5 is the pricier of the three mattresses. Although AS4 and L&L are priced the same, you can get Loom And Leaf special promotion from SleePare stuff over the chat. Moreover, L&L is ranked best for couples with different sleep preferences and is also a clear winner in terms of cool sleep.