We do cloth diapers and LOVE it! We don't do a service. We just wash her at home. It is easy and doesn't cost any extra!
I don't use the Flip diapers but a friend of mine just tried them and loves them! They are very trim. If you want to do diapers cheaply, you should go with Pre-folds and covers. I wanted the easiest possible and went for Bum Genius One Size diapers so I wouldn't have to buy more of each size and they work the most like disposables in ease of use. They are more expensive to start but once you have enough, you shouldn't have to buy any more- they should last through potty learning!
Diaperswappers.com is a great place to buy used diapers. Cottonbabies.com is a great place to buy Bum Genius diapers. Abbyslane.com has free shipping and I think they have a trial pack so you can decide what diaper works best for you. I am on a forum naturalparents.com and they are a ton of help as well!
Good luck!! Welcome to the fluffy-side!