The nice thing about floss or picks is that they're incredibly portable, discrete, cheap and effective. A lifetime supply of floss won't cost you anything like $900 either. Now if flossing turned out not to be sufficient for oral health then I'd be interested, but as is flossing is more than enough! I'm also a strong proponent of picking/flossing after any time you eat, ideally followed by some xylitol gum.

My dentist says I'm one of only three people she's ever seen who's gums never bleed no matter what she does to them, one of those two is my mother who taught me those habits, and the third is an old Greek fellow who picks as well.