I've been doing research for a Guyot bottle PSK article for the next issue of Survival Quarterly magazine. I say get the 38 oz "Standard" model. Thanks for the info on the Backpacker model. I wondered what that taper is all about!

Dave Canterbury had a video of him makning tea in his bottle. He had the Standard model.

The regular plastic Nalgene cap will not fit on mine either but I use the Humangear Cap instead!

My kit is based on the 10 x 4 Maxpedition bottle holder. I got the 12 x 5 holder for comparison purposes.

Pots and cups nest well in the 10 x 4 and "standard bottle." KK just came out with a 64 oz bottle. Its a good fit in the 10 x 4 holder, but you have to put your hand down in the bottle to grab and remove! A tight but acceptable fit! Ya can't take the bottle out for drinking! Of course it fits the 12 x 5 holder also.

There are other reasons to go with the Guyot. Looking inside the Guyot, I can't see any metal seams. I can with the KK!

How ya gonna take it out of a fire? The Guyot has finns that allow many options, the KK is useless here!.

The Guyot is thicker than the KK. So weight vs strength! Now the 64 oz KK will take regular nalgene caps but still, go with the Guyot!