I adored my Lanacare wool pads. They only need to be washed (by hand, with wool wash) every week or so, because the lanolin in the wool is antibacterial. Just let them air dry overnight. You can also re-lanolinize them, which is a good way to keep them really nice and use up any Lansinoh you have sitting around. They sell a thinner, cheaper one (Softline), which is what I had and they were fine for me, even with oversupply. Plus, I'm prone to plugged ducts and they really did help reduce the frequency of plugs. This is an advertisement, but has good info about them: http://www.danishwool.com/products/item/nursing_pads.html. I used them for over a year, and they are now being used by a friend, so they last for a long time. I do wish I'd spent the money on a second pair, to use while washing/drying the others.
I also had a few pairs of hand-me-down organic cotton pads. I needed to wear two to keep from leaking through, and they had to be washed every time, which made them less useful in my experience. I hated the disposable ones - they were rough, the sticky side always ended up stuck to my skin and I had to change them every time I nursed.