Recommendations on a crib mattress!

I was gifted an expensive Colgate dual sided (one infant, one toddler) mattress. I thought well, for $250, has to be comfortable right? No. That thing was hard as a rock. My son wouldn’t even sleep well for a nap on the toddler side was was more soft. So I ended up buying a memory foam topper and boom, perfect sleeper (up until 18 month sleep regression we’re still fighting) 😆 looking for a reasonable mattress that’s actually worth the money!