I am one of the few people that can say he he tried almost all the multi-vitamins out there. Animal-pak is pretty good for its price. if you want the best multi-vitamin pack, expect to spend anywhere from $80-$120 per month for it.
the USANA health pack. i tried it for a year, broke the bank, but was not sick the whole year, not bad from going to being sick once a month to none at all. I even made some good gains (but not being sick makes the difference anyway)
You can find it cheaper on e-bay though, lotsa people buy into the business but can't keep up with it and then sell off their stock there for a major loss.
the company is like Amway, but they only sell health products and their stuff works, I just can't afford it myself all the time.