Hi KellyDaniel.
Welcome to our Mattress Forum!
You can find Lesa mattress specs in post #2 here and a quick search (just click here) will bring some more information including some comments from when it was first launched 4 years ago in post #2 here. I am not sure if you tried the original Leesa bed at your friend’s home or the reworked Leesa bed which replaced the top layer with a softer and less dense gel foam. Overall … with a total of 4" of 3lb memory foams in the comfort layer I would place a caution about buying or trying to replicate the “build” for this mattress. There are other mattresses in this price range that use higher quality and more durable materials in their comfort layers that are in the same or lower price ranges (the comfort layers are generally the weakest link in a mattress in terms of durability). In terms of price you’ll always pay a premium for any natural and organic choices so I’d make sure to read more about the 3 most important parts of the “value” of a mattress purchase in post #13 here which can help you make more meaningful quality/value comparisons between mattresses in terms of suitability (how well you will sleep), durability (how long you will sleep well), and the overall value of a mattress compared to your other finalists based on suitability, durability, and all the other parts of your personal value equation that are most important to you (including the price of course and the options you have available after a purchase if your choice doesn’t turn out as well as you hoped for). On a site like this where the consumer members have access to a much larger number of higher quality/value choices and are more informed about how to make more meaningful comparisons … Leesa doesn’t compare well to some of the other options that are available for the same price range.
The bounciness you’ve noticed in the My Green Mattress is probably coming more from the innerspring than the latex. If motion isolation is important to you then you perhaps can look into all foam mattresses or hybrid pocket coil systems.
Aside from this I would make sure to revisit the mattress shopping tutorial here(there is a condensed version of it at the end of that post) which includes all the basic information, steps, and guidelines that can help you make the best possible choice … and perhaps more importantly know how and why to avoid the worst ones. When assessing any product and before making any purchase also be sure that you find out information listed here so you can compare the quality of the materials and components to the durability guidelines here
Phoenix