If you're not fussed on prettiness then Smartipants ones are good http://www.fill-your-pants.com/nappy-bu ... t-bag.html
They dont have the 2 layer of PUL then cotton print so are virtually dry straight out of the machine and so are also very easy to squash into a small size. I've had the bigger version and been using it instead of a pail for about 6 months and it does the job fine.
Otherwise if you do want something pretty then there's Blueberry oneshttp://www.fill-your-pants.com/nappy-bu ... t-bag.html
Or planet wise which have a thin pul lining to them, not like the thick MF ones and leslie's boutique ones which I also love - especially the the double pocket one as the outer pocket isnt lined so you can keep clean nappies in there so they are all together but it doesnt add any bulk IYGWIM!http://www.funkymonkeypants.com/planetwise.htmlhttp://www.funkymonkeypants.com/lesliesboutique.html
HTH I have a bit of an addiction and wont reveal how bags wetbags we have in various sizes >.<