= Sleeping Giant Art&Science =

All specs are for Firm, Queen-sized mattresses.

||<rowbgcolor="lightblue"> || Silver || Gold || Gold Plus || Gold Advance || Notes ||
|| Price          || $500   || $700 || $900 || $900 || Gold Advance is on sale, down from $1000 ||
|| Zones          || 3      || 5    || 3    || 5    || - ||
|| Pillow top     || No     || Euro || Euro || Yes  || - ||
|| Comfort layers || 20mm medium/firm foam || 20mm medium/firm foam              || 50mm firm/medium foam              || 50mm medium density foam           || - ||
|| Edge support   || -                     || 2 rows of 2.2 gauge springs        || 8.5cm foam box + heavy gauge wire  || 8.5cm foam box + heavy gauge wire  || - ||
|| Quilt layer    || 18mm quilting foam    || 10mm quilting foam, Quilting fibre || 20mm quilting foam, Quilting fibre || 10mm quilting foam, Quilting fibre || - ||

We know we already like the Silver mattress, it has 1.8/2.0/1.8 gauge springs in its three zones.

 * Gold has 1.8/2.0/1.8/2.0/1.8 gauge in five zones, sounds good
 * Adds edge support which I think is a good feature
 * Adds a pillow top
 * Quilting layer changes from foam, to foam+fibre