How well does this plush hybrid isolate motion for couples?

Very well, scoring 7.9/10, and slightly better than its latex-topped 14-inch sibling. Each of the 1000 pocketed coils is sealed in its own fabric sleeve and compresses alone, so a partner's roll-over is not telegraphed across a connected wire grid. The memory-foam layer in the comfort stack absorbs the initial impact where it lands. Because there is no natural latex here to add spring-back, surface motion dies down a touch faster, settling in about a second.