Hi dbl006,
I don’t have any personal experience with it but the Alexis has only been available for less than about two years so there would not be any “long term” reviews available of the specific mattress. Latex has been used for decades though and is the most durable type of foam in the industry regardless of which manufacturer uses it in their mattress and the materials in a mattress are the most effective way to assess the durability of a mattress.
Brooklyn Bedding is one of the members here and competes well with the best in the industry and they would certainly be one of the manufacturers I would recommend dealing with in terms of their quality, value, and service.
As far as a specific mattress choice though … I would be VERY cautious about using other people’s suggestions or reviews as a way to make your own choice (see post #13 here about mattress reviews) because their experience may be very different from yours in terms of PPP (see mattress firmness/comfort levels in post #2 here). A certain mattress design or comfort choice that is “perfect” for one person may be completely unsuitable for someone else to sleep on regardless of the quality, value, or durability of the mattress. One of the benefits of the Alexis outside of the quality of the materials is that it has two layers of latex which can be individually customized at the time you purchase it (based on your more detailed conversations with Brooklyn Bedding) and if necessary after you sleep on it (with a layer exchange) so it provides many options in a single mattress.
A forum search on “Alexis” (you can just click this) will bring up many more comments and feedback about it.
Phoenix