Basket question

[Tony]

I have a Brassia Edvah Loo currently in a 6" pot. It's a big plant (14 pseudobulbs and 4 new growths) and in need of repotting once it finishes flowering. I'm thinking about putting it in a basket, but I've never grown in baskets before. What is the best potting medium for baskets, and when the plant outgrows a basket, how do you move it to a bigger one without tearing the roots apart? I know Brassias like to be pot-bound, does this apply to basket culture as well, or can I put it in one with room for several year's growth?