We've been using BumGenius 2.0 pocket diapers for a year and up until recently I've loved it.
We started with the gDiapers, but they were more expensive AND more work than either disposables or cloth diapers AND you can't flush the outer liner so it still made no sense to me.
We invested $400 in the BumGenius after a short stint with the gDiapers, as well as purchasing a box of Allen's Naturally Detergent (you can't use regular detergent with CD), a diaper pail, two liners, two wetbags, a bottle of aveda tea tree oil for the pail, and a bottle of original Dawn to strip. I had to have the detergent shipped from Amazon as we don't have anywhere within 100 miles that sells detergents safe to use with CDs. All told we've spent an initial investment of $550. Now I say initial bc I strongly believe our energy costs have risen since I'm doing a load of diapers every other day. "A load" involves two full wash cycles, an extra rinse cycle, and then dryer time. Also, they recommend you bleach the dipes every month and strip every two months.
We have recently gone to line drying the dipes, altho it takes at least a day to do so AND you can only do it on sunny days which in Kentucky is about one out of every 5 this time of year. I feel lousy about the extra water and energy we're using to wash the dipes, but we're no longer drying.....and here's why:
The dryer works great, except it "dries" in a leftover odor which, over time, has grown so great despite the chemical bleaching (which btw I never liked the idea of and irritates my daughter's skin anyway) that I just started sticking them outside hanging off the deck to dry bc I couldn't stand the latrine smell that came from the dryer. SURPRISE! The UV from the sun kills 90% of that and if I hang the drying rack over by the hyacinths the dipes actually smell like sunshine and flowers the next few days.
We originally purchased 24 BGs with an eye toward more as the budget allowed. We found, however, that if I keep on top of the laundry, the 24 have been sufficient. Still, it would be nice to have another dozen to be able to better cope with emergencies, accidents, prolonged bouts of diarrhea, etc. (She had rotovirus for three weeks and while we had NO leakage with the BG, we finally had to go to disposables bc we couldn't keep up with the demand as we were chaning diapers at least every hour. The disposables, btw, leaked EVERYWHERE. I did at least three bed and clothing changes a day, have it on my carpet, traded between car seats as she filled those every time she was in one.....) I would recommend at least 36.
Do remember that CD babies tend to potty train earlier. Most of the ones I know personally were trained by 18 months. Also, at this stage it might be better to consider training pants instead of investing in diapers, but that's obviously up to you.
Why I'm currently disenchanted with BGs:
Despite a single bad review I read from a long-time user who said that she went through two sets and every single one had the very necessary elastic fall apart, I went ahead and purchased them and have been VERY HAPPY WITH THEM. I feel like we got our money's worth out them, which is good considering mine are also now stretched out and leaking due to bad elastic. I had intended to use them with additional children in the future and while the inserts are certainly usable, the diapers are not going to be. Which means either we start over AGAIN or go back to disposables which our budget does not allow for......
I also don't like that the BGs are all synthetic. Although, we tried organic and natural fiber diapers and they caused my very allergic baby to get horrible rashes. Something else to think about....
The most expensive way, and also the best, is to do Diaper Service Quality (DSQ) prefolds with the service. I've heard great things, but again, too spensive and not offered in our area.
I highly recommend buying used first on eBay or craigslist to try out several different brands, then invest with the one that's right for you and your child. If you're interested in BG, check out cottonbabies.com. Also, I got most of my other diaper necessities from nickisdiapers.com.
A diaper swapping site with TONS of information: diaperpin.com
I recommend having 24-36 diaper sets. The poopy ones you rinse out in the toilet and flush when you're done, then throw the dipe in the diaper pail. Also, we use disposable liners that allow you to just pick up the liner and flush....no washing. Clear and Free detergent will NOT work - regular detergent ruins CD.
good luck!