I started with the standard Nalgenes, but for a while switched to the little square Pure Leaf tea bottles, as they fit the threads on my filter that are meant for narrow mouth Nalgenes. Two of the Pure Leaf bottles hold a bit more water than a Nalgene, for about half the weight.
However I've since switched to carrying two 48oz Nalgene Cantene pouches in my pack, with a Source hydration hose kit with bottle cap adapters. I'm carrying 3L of water for about the same empty weight as a single 32oz/1L hard Nalgene. I've got all the benefits of a wide mouth (especially threading onto my filter), with most of the benefits of bladders. It's more awkward to drink from in camp than a bottle, but slightly better than most bladders.
For day hunts around home, I just carry a Nalgene Oasis GI-style canteen in a repro WWII carrier, as it's the most pleasant bottle to drink from that I own.
One thing I haven't figured out yet is a decent way to carry and drink water on my bicycle. I've gotten back into that in recent years, and it turns out I still dislike drinking from bike bottles as much as I ever used to. Carrying around water bottles wasn't common when I was a kid, so I never realized how difficult it is to unscrew a bottle lid one-handed while riding.