Prouboy,

I sympathize.  I have same predicament but then again I am a notorious hoarder of all sorts of camping & canoeing equipment.

My choice would be to keep the Nalgene for the same reasons ST has stated.

Also, I wholeheartedly agree with Solus re: the proper labeling of pee bottles.  However, this is less of a concern for us "hammock tent" guys as we typically do not use pee bottles.  Unless you are a truly talented individual, their hygienic use becomes rather problematic while lying on your back in your hammock. Trust me, it can lead to worse outcomes than simply dealing with skeeters....

Jimbo   8-)