Ok, this is my favourite, too. I watched the logos and tipped on the top right. But some seconds later I thought it was too simple.
I tested all the logos and pulled them through my fax. As to be expected the simple logos are faxable, the others went to undefined scribblings.

here you can see the faxed logos.

I love the bottom right, but it's definitely unusable for faxing. Printed out from my printer it looks good. Very good.
As canuckInLA told, it's possible to use more than one logo.
In this case I propably may combine the top right and the botttom right.

Again, thank you a lot for giving me so much response!

Rolf