RE: Stik plane = better flying than Decathalon?
The Decathalon is a model of a great full-size aircraft; though the shape is dictated by the need to fit humans inside and a suitable engine in the cowl. The Stik and its decendants are free of all such "limitations" and Phil Kraft and those that carried on the concept were able to make a simple airframe that flew great in R/C size. Nothing really magical about it (them), just that the design is a happy mix of easy build, ruggedness and great flying characteristics.
If you like inverted maneuvers stick with a Stik.