I don't have a dryer, so flats have always been my mainstay. Plus prefolds for nighttime and extra daytime absorbancy for toddlers. I'm still using GMD prefolds but my flats are now all OsoCozy.
I do the origami fold with Snappies, although I'm still using a diaper pin with my 9mo.
Covers... I like Thirsties Duo Size 1 for babies. A Flip cover for night. I like a mixture of snaps and Velcro. For older kids I'm not so sure, I kept having PUL failure with my Size 2s. I think I've settled on Econobum as my favourite cover. I need to buy more because my 9mo is getting too big for her covers, and the 2yo isn't going to be toilet-trained for a while. I'm procrastinating because I'm hoping Cotton Babies will have a sale.
I did love my Aristocrats wool cover for night, and then I bought a second smaller one secondhand, and then stopped using them.