Very cool cabins! I'm also in the process of planning a cabin for our farm property in NE Texas, overlooking our 12-acre pond.
I was considering a log cabin, but it's a bit cost prohibitive (according to the wife). I'm currently looking at some of the cabins offered by Tuff Shed. They've got a relatively inexpensive single story ranch style -- I'm thinking about the 24x36, and upgrading the siding to a rough-cut cedar and the shingled roof to green metal. It's got a nice 8' porch. Nothing too fancy, but comfortable enough for the family and a few guests to spend the weekend for some fishing or duck hunting.
I'll post pics when (if) the plans progress. Please, no comments about saving $$$ by building something myself -- I could screw-up a one car funeral. Every time I try to fix something, I mess it up worse and it costs twice as much to get someone to really fix it. I prefer to bring in paid professionals and help the economy!