Mattress topper suggestions

we have a topper in our TT. we bought one with regular foam side and if you flip it over it has gel on that side for cooler sleeping in hot temps like AZ. we just trimed the foot end so it fit our mattress better. I don't think foam toppers are a waste of money, we have them in our three beds in the house as well. in the spare bed rooms we bought cheap mattresses from big lots and toppers at costco and the kids like the soft feel of the toppers over a hard mattress. I guess it comes down to you and how you like your mattress to feel. soft or hard