Before you buy. Most online mattresses come with a long home trial, often 120 nights or more; check the return fee before buying.
Side sleepers, plus a cheaper and a firmer option
Heads-up: A bit bouncy; heavier back sleepers may sink too far
Helix Midnight Luxe
Queen size on Helix's site, from the price with today's discount code to full price.
Or, if you need something else
A hotel-like bed, if budget allows
Saatva Classic. Heads-up: Pricey; a $99 fee if you return it
Hot sleepers, couples, and smaller budgets
Casper Snow. Heads-up: Edges feel weak on the Snow and The One
Picked from RTINGS, NapLab and Tom's Guide, which each test mattresses in a lab. Helix and Saatva are recommended by all three; Casper is RTINGS's top pick.