I liked them, but I preferred my cloth diapers. The gDiapers were good for when we were going to be out for a while, or when DD went to grandma's, but I usually ended up stuffing them with my prefolds.
I never used the Gdiapers.... but I use the Flip diapers and they are very similar, I considered the Gdiapers but they were a little more expensive. But the Flip diapers are great... I have had a leak here and there but I had leaks with disposable occasionally also. If it helps I shop on cottonbabies.com and they have some of the lowest prices on all kinds of cloth diapers.