Real Nalgene, made in USA and marked Nalgene. I won't buy the knock offs either. I've also picked up LL Bean, REI, MEI , Banana Republic and USGI stuff. So far nothing has died on me, but I'm fairly picky and only take the nice stuff. All the BOB's etc for friends and family have been done this way.
Got a EMT bag made by Galls for $1.75 at the same place.

Dave