Solartex is by far better than Ultrakote but it is no where near the real Polyester covering and Stits. The fabric, polyester lite, is identical to the full scale fabric and will shrink enough to break an airframe. It shrinks a lot, a ridiculous amount, so much so that I don't worry about getting it taught when applying it. And it will not loosen up or wrinkle even setting in the sun all day, unless there is something underneath to cause a gas such as some primers. The Stits painting system is also based on the full scale, I was told the difference is it has more pigment. From the minute the spraying of the Poly brush starts one can spray each layer of the brush, spray, and first color without stopping. As with only thirty minutes required between coats with the time it takes to clean the gun and switch product it is ready. I know of rc airframes that are ten years old and look like it was just finished. I say this all the time, "Simply put, there is nothing better"!