A Baby makes a lot of poo and pee, they make more than you expect. So if you are going to use disposable diapers you should be well stocked and choose diapers that is reliable. What you need to do at first is buy small amount of each brand so you'll know what fits your baby best. You should also choose the one that has the best absorption since it is really important that the diaper can keep moisture away from baby's skin. If it can't, and if the baby suffers continuous dampness it can lead to diaper rash.
Here are the brands that I've tried already:
Pampers baby dry stretchy tapes - this is my top choice since it has really good absorbency, provides leakage protection, and gives my baby comfort. I really like the stretchy tapes which makes it easy to tighten and secure the diaper.
Huggies Snug & Dry - This is my second choice since it is cheaper than Pampers and is also absorbent.
MamyPoko Dry in Blue packaging - good fit for my baby, it is really absorbent. The materials use is soft.
MamyPoko Slim Yellow packaging - it has a nice fit but it don't last that long and after a few hours there will be a leak.
EQ Diaper - it is absorbent, very affordable, but the tape can lose its stickiness.
Drypers - good materials, absorbent but it doesn't hold liquid the same as Huggies and Pampers.