Boring, I know, but I am really struggling here!
We moved into our first house last year and so far I have not managed to solve our doormat issue. Our front door has 0 clearance from the floor so we can't have a mat inside the door (unless it was out of the way of the door, but that just seems silly).
I bought a nice, cheap coir mat from Ikea, but the front of the house is very exposed so it gets wet very easily and takes forever to dry out so we have days of wet footprints in the hall, even after it's stopped raining. Then I found a cheap but small coir mat without the rubber backing which I thought would be worth a try (with a view to buying a bigger version if it worked) but that's just as bad 
I'm now thinking that the coir ones that are like a wire mesh might be better, but I can only find small ones (up to about 60x40cm) which look a bit naff in the middle of our doorstep.
I'm not sure about the black plastic/rubber ones, although they do come in some very pretty patterns.
Anyone got any suggestions??