Boma has more variety - more fruits, more dessert choices, picks for kids - soups - wow on their soups!! However, a nice Dis'er posted recently that they have made some changes - if you've never been, you have nothing to compare it to - however, no prime rib? driy sirloin? not something I'd reccommend - and they had a bobbita (I can never remember the name for this side dish!!) because of the changes - I know I'm a picky eater - so I just dont know...
Ohana - we've been 3 times - and there have been changes!! again, if its your first time - you have nothing to compare it to - but - dd just told the waiter what she wished for (chicken nuggets, fries and a bowl of ketchup) and viola - she got her wish!! and I think its a basic all you can eat meats, shrimp, love their wings - salad -
I would lean towards Ohana for a first timer - its close to MK - so transportation is much easier - and if you go from MK to Polynesian, do consider taking the resort ferry boat - its lovely - and after dinner - stroll out to the beach with a drink to go - and watch wishes from the beach!! AWESOME!!