Unfortunately the market is very dry of midsize and fullsize wagons/hatchbacks, thanks to the excessive and mammoth SUV's taking over our roads. So, you are left with 2 choices: midsize/compact car (tight squeeze for 5 but it can be done), or a minivan/CUV. If appearances and stereotypes don't bother you, get a minivan - they are hands down the best method to economically transport lots of people and stuff. If prices are a concern, I'd look at a used Honda Odyssey - it consistently ranks as one of the best minivans on the market.