microfibre does dry very fast.
however, its no good for heavy wetters, it can get powder build up in it worse then other fibres, it looks old fast it goes grey (yuk)
i think it depends on the type of child you have really, microfibre is no good for us here, george can out pee a little lambs in 20mins
one piece of advice DONT buy a whole set of the same nappies. its a waste of money if you dont like them/ have a poor fit/ have a heavy wetter you've wasted alot of money.
tips for being in a flat: get one of those over the bath airers, hang nappies on coat hangers in the airing cupboard, tie washing line cord from one window to another outside and hang nappies on that.
also, as long as you buy enough nappies, it doesnt matter how long it takes them to dry