I had one of those Coleman Peak One 400's back in the late '70's. It was our backpacking stove. The wife loved to cook gourmet meals, at home and in the woods.

The stove had the best adjustment to the flame, burned quiet and wsa reliable. The only problem I had with it was the weight, it was a beast.

I made the mistake of selling that one off and buying the later model 550. The 550 is not nearly as good as the 400 was. I would love to find another 400 I could afford:)