BBM, saw your message after I posted mine and felt glad to see I'm starting to understand this "new world"... wish shops stocked more reusables, can't understand why mothercare can't stock at least trial packs in store, as they sell quite a few types online , at least people would have an idea of what they actually look like... it's so much easier when you can see/touch something...
I had the rainbow wrap too for DS1, and I agree with you, really cute (got some pretty pics of him wearing it..), but seemed very bulky and stiff - the one in the link looked a better system, but didn't really want to spend all that money (got two new nappies and an airflow wrap for less on e-bay!)!! maybe I'll try making one...