Don’t know about the Stay-Brite, but there was a thread over on the small-scaler forum where several posters had some bad things to say about Tix flux. It seems to be corrosive and will cause failure, probably sooner rather than later.
I’ve been using Burnley’s non-acid soldering paste for several decades now. It comes in a 2-ounce can, and looks like brown Vaseline. In conjunction with 60-40 tin-lead solder (with or without rosin core) it produces excellent solder joints guaranteed to last for decades.
Peter: read the outside of the package (box) “if the box don’t brag about what I want, then it don’t have what I want, and I don’t buy it.” Take a trip over to Radio Shack. You should be able to quickly acquire exactly what you want there. Just take the time to read the box.