What you should consider next is the ergonomic features. Ensure it is light weighted and that it also falls nicely enough for you to carry conveniently to the campsite or any other place. Some camping cots are sold with storage bags which fit nicely on backpacks; this may be a good option for you.
You should also consider if the camping cot will accommodate and support your whole body. A camping cot that is too short may not be a good idea. If you have one of such already, it may be a good idea to get rid of it and replace it with one that suits you.