How durable is this deep plush Euro top over time?

It scores 6.8 for durability, with the honest weak point being the deep soft foam. The 1050 thick 13.75-gauge tempered-steel coils and foam-encased edge are genuinely robust and resist sagging, but a 6-inch plush comfort profile (1.75 lb density) will show body impressions before the springs ever wear. The 10-year warranty backs it. Using a protector and rotating the mattress head-to-foot regularly helps the soft top keep its loft and extends its life.