I've enjoyed the zero gravity setting immensely for a comfortable reading position. Having the option to elevate slightly more than that if I wish is a plus. The relief from lower back and neck pain by the various adjustments allowed for support was a huge draw for me and my husband. This is a great product and it fit comfortably within our Thuma bed frame with the highest length for leg attachments installed to sit just above the slat stops. We look forward to enjoying the Tempur-Ergo Smart Base for a long time!