I also started looking while TTC #1 and spent way too much time trying to figure it all out! I did enjoy all the looking, though
There are so many choices and it's very individual but this is what has worked for me. One of my biggest priorities was low cost.
My ideal stash:
A few snappis
Flannel wipes ( I
6 Prorap covers
1 doz preemie prefolds
6 FuzziBunz preemie with inserts (for night)
(I had to break into the size small stash from the beginning because this was not enough diapers to get me through two days- if you want to go more than a day i would get 2 doz prefolds)
8 prorap covers
2 doz infant prefolds
6 FB small with joeybunz inserts
3 prorap covers
3 imse vimse soft covers
1 dozen regular prefolds
I can go 3.5 days using my medium stuff and still using the infant prefolds. I usually wash M,W,F though.
My dd is 5 months, over 20 lbs and in mediums. She was born 8lb2oz, and I easily could have skipped the newborn size and gone straight to small. I tried the bummis super whisper wrap covers and the bumkins covers and just didn't like them. I just tried the imse vimse for the first time in medium and really like them. I found that the medium proraps are WAY bigger than the smalls, so the I.V. helped fill the gap.
I love trifolding a prefold in a cover at this point- I use the infant prefolds in medium covers for that. The regular prefolds I like to snappi with a bikini twist fold when I am expecting a big poo.
I definitely needed 6 covers for the first two months because she was a nearly every feed pooper. So poop got on the covers a lot. I might even go with 8 next time.
Other info... I have bought my fuzzibunz as "seconds" for 12 dollars instead of 18. They have performed just fine.
My suggestion with covers would be to buy several newborn proraps, one small prorap, and one small of a few other covers that appeal to you before the babe is born. That way you have a backup when the little one suddenly grows overnight, and you can figure out what you want for size small.
Prorap is the best for newborn because they are the cheapest out there and you grow out of that size SO FAST. Plus they have the umbilical cut out which is great.
This is turning into a book so I'll stop. Green Mountain Diapers has a ton of info on their site. And Jardine diapers is great for comparing types of covers.
Have fun shopping!