I've pretty much abandoned flip tops and now use a combination of Party Pigs and 22 ounce bottles with caps. The advice I give all newbies when they ask is, once they are sure this is a hobby they're going to stick with, to buy big. I've wasted hundreds of dollars on buying items incrementally (plastic bottles, flip tops, big bottles, and now Party Pigs) when I could have gone big in the beginning and saved a lot of money.
Then again, my wife would have freaked if I'd gone for a separate fridge, Corny kegs, and Fermenator from the beginning. Not that I have those now, but I'm sure I'll end up with them.