If MOS is an excellent product why would you wait? Sure, they may say "wait one month" but we all know how long an Amiga month is (usually ends up being infinity).
MorphOS is also only in Betatesting yet, just as AmigaOS! So when AmigaOS is an excellent product, why would you wait???
You also need to wait to get MorphOS, if you are not going to betatest, just like AmigaOS!!!