I believe you, Phil and I'm sure many others can say the same. I appreciate your input.
Inasmuch as there's no clear-cut consensus on the best anti-freeze for K-bikes (I read a number of threads on the subject here---and was more confused by doing so) I decided to err on the side of caution. Motorex is bike-specific (and I know that our bikes have car engines, but...) and formulated more or less the same as Motul.
I also have read of problems with regular Prestone and that it does contain some phosphates (even though it may state otherwise on the label). I figured why take a chance?
Now I just hope this doesn't turn into another oil thread...