Buying a mattress- no maximum budget

Hi all

I know that mattresses have been discussed here before, but I didn't see anything about the brands we are considering.

We've had our Sleep Number i10 flexfit 2 adjustable for 11 years and are ready to get a new mattress.

Before that, we had a Tempurpedic. I hated it. I do not want a Tempurpedic mattress. I found Purple to be really uncomfortable in the show room, though I've never owned one.

After a weekend of mattress shopping, we narrowed it down to:

Aireloom Luxe Top M2+Plush

Avocado Luxury Organic Ultra Plush

Both/either on a Bed Tech 6500 base.

Both mattresses felt extremely comfortable in the show room. After reading reviews, both seem to have issues with sagging after time.

Budget isn't much of an issue, but I don't want to spend $$$ on something that won't last.

Do you own one of these mattresses? Or something else I haven't considered? I would love feedback and ideas for making this decision.