What’s the best mattress to buy online? Are you struggling to choose a great mattress, with so many options out there? Is everything mattress starting to look the same to you? Maybe you’re looking for one particular feature, like advanced cooling, and you just can’t tell which one is going to work well. I’m here to help you! While I don’t believe there is one best mattress to buy online (we are all different, so there can’t be a one size fits all) I do believe there is a best mattress for different scenarios.