Memory Foam is probably better, you sink into your bed like quicksand.
I always love memory foam, I remember that I used to have really bad back problems playing sport, and my bed was REALLY uncomfortable, I got memory foam, and I can catch up on my sleep, and my back is so
relaxed.
Springs, meh, I hate them, there like bouncy-stuff, unless you like jumping on beds, Spring's is your thing.
Want to relax and sleep like your with the angels(Not literally)? Memory foam is your thing.