After purchasing a new crib, I was on the look out for a good quality mattress to go with it. I found this one on amazon and was instantly drawn by the price (currently only around the $150 mark). Once it came in I can say this is amazing. There is no crinkly cover. The cover itself is easily removable to clean. I also like how it has dual sides (firm for baby, softer for toddler). Its also a full foam mattress, meaning no coils. Not to mention it is surprisingly breathable.
My only complaint is that it takes longer than 72 hours to expand. This can be annoying but also easily avoidable if you order in advance. It also had a little bit of a plastic smell at first, but aired out quickly. Overall I highly recommend this mattress for any parent looking to upgrade their crib game.