It always cracks me up when friends ask me about the best toothbrushes or toothpastes to use. The ads on TV make it sound like dentists spend their entire 4 years of school discussing the pros and cons of different brands of toothpaste, toothbrushes and mouthwash.
In all honesty, I think we spent approximately a half hour of lecture time on oral hygiene. Basically I sum it up for my patients this way:
toothbrush: get one that says soft and USE it
toothpaste: one with fluoride
floss: I don't care if you use the little fibers you pull out of celery as long as you do it more than twice a year.
mouthwash: whatever floats your boat but you STILL have to floss