What kind of crib mattress are your LO using?

Trinity • Mommy to Keanu, Azaleah, & Keenan

My LO is using the safety 1st mattress since he was 6months and doesn’t seem to like it or get comfortable.. after another 8 months he still prefers my bed... my bed is more squishy, and the safety 1st mattress seems more firm and hard. Any advice? Or suggestions?