This crib can go from a mini crib to a full crib to a toddler bed. Trust me, it's worth it. The transitions are smoother - so you don't need to let them kick, slap, and headbutt you in your bed.
I need to look at the other reviews, but I think the crib/bed is easy for you to change height. I used to sweat like crazy trying to get it right in my normal crib. (But this would just be a plus).
Overall, I think it's worth it. (See the reviews on google if you'd like)