Only ones I've ever found not to be scratchy are the Johnson's ones, because they're not plastic backed. DON'T get the Tommee Tippee ones - they <<TMI>> got stuck to my nipples and ripped half of the skin on my nipples off!!
Stiffy I bought the Lilypadz as I have v strong let down and was going through boxes of the things (disposable ones). I thought i had found the answer in Lilypadz but actually they are a bit crap. The milk used to pool and then leak anyway. After you change them you have to wash them and if you leave them lying around they get all fluffy and so you have to wash them again ( I am lazy!)
Also they are supposed to sort of stop the milk leaking an you do this by pushing your nipple in, but I think this caused engorgement.
Unseen is right IMO washable (Lansinoh) ones were v good.
Glad I saw this thread as I usually always go for cheaper stores own ones. Had no idea they were so different. So have ordered a few boxes of Johnsons.
A really gross tip I discovered though if you run out of decent ones. Cheap nappies cut up, or even sanitary towels cut in half work even better. Bulky but if you are in on your own its ok...not to be recommended in public though :d