I've used cloth exclusively on my girls- however, I didn't start using them on my first until she was one year old. I use Fuzzi Bunz, which are very similar to Bum Genius. The main difference between the two is that the FBs have snaps instead of velcro. I prefer the FBs to the BGs because my older daughter could undo velcro very early on (and loves to be naked, so she was always taking them off!), but couldn't undo the snaps for a very long time. However, some women use BG diapers and don't have a problem with their little ones pulling them off. And I must say, one plus is that when they start resisting diaper changes when they get a little older, the BGs are easier to get on because you don't have to mess with the snaps.
I actually would recommend either one of them, and you may want to pick up some of each to try them. I'm pretty sure you'll end up loving both- they're great diapers!
Pros: I have saved, literally, thousands of dollars on diapers. They're much softer on the bum than disposables. My oldest has very sensitive skin, and they got her diaper rash and yeast infections under control super quick. They are VERY easy to wash, and come clean beautifully if you follow the wash directions. I love the colors they come in- they are so cute! They last forever and stay in great shape. I've actually bought a bunch of my used off of craigslist.com, and they're also really in good shape (and I think those went through multiple kids). And of course, they are environmentally friendly.
Cons: Velcro does wear out, sometimes you have to replace it. The manufacturer will send you replacement velcro if that happens (I have not had the snaps come off on the FBs). You have to wash the poop off in the sink or toilet, which can take a time or too to get over the gross factor. I got over it very quickly, and it's not really bad at all. Definitely not gross enough to deter me from using them!
Hope that helps!
:-) T.