I have to stake one of my Phals before otherwise it will hit our curtains. I had some difficulty with its stiff spike, so I decided to sort of leash it, and not too closely tied to the stake. It still supported it nicely.
My other noid Phal I just let it cascade,looked prettier that way. I guess if I have a bigger growing space, I can let all of them cascade, but there is space limitation for mine.
On a stake/leash:
No stake: it looks good just like that, with a double spike so it looks balanced too.