Hi arc,
There are all good quality materials and there are no obvious weak links in this futon. Latex is the most durable foam material in the industry so it certainly wouldn’t be a durability issue.
They don’t say how much wool is in the quilting but thicker layers of wool can be prone to some initial impressions but the tufting will help prevent the wool from shifting or bunching and will pre compress the wool to reduce impressions and if you sleep on different areas of the futon and flip the futon on a regular basis the impressions will tend to even out over time. While the wool can become firmer as it compresses … it will have little effect on the support/alignment of the mattress because wool gets firmer as it compresses unlike foam which gets softer over time as it breaks down.
Constant bending of any mattress or futon can certainly either weaken or speed up the breakdown of the materials and components in the area of the bend over time.
If the tufting is clearly uncomfortable for you then I would certainly take this into account in any purchase decision.
I would be very cautious here and I would make sure that you find out the quality/density of all the layers in the mattress before you consider purchasing it (see this article). There are over 3" of polyfoam in this mattress and some additional polyester fiber as well which are likely to be lower quality and less durable materials that would very likely be a weak link in this mattress (see the foam quality/density guidelines here).
Like the Keetsa (which is also made by Zinus) this would also use lower quality foam and fiber and I would be very cautious here as well unless durability isn’t an issue for you. This is the budget range where you will normally find mattresses that would only be suitable for a guest bedroom or temporary use.
I would also read post #6 here before you consider purchasing any mattress manufactured in China (such as any Zinus mattress) so you can factor in the additional uncertainty involved if you are buying a mattress that is compressed for longer periods of time during shipping and storage.
Out of these three the only one that I would realistically consider would be the futon although there may be better options available to you than any of these.
Phoenix