Mesh pots are great! Especially for Cattleyas. I use them a lot when I re-pot. I line with coco-husk fibers and then put the orchid and medium in. I like clay pots for my big Dendrobiums like moschatum and the antelope types. They are heavier and more stable. My moschatum is 5' tall.
I bleached all of the pots and baskets last night in preparation for re-potting. I will be purchasing some smaller mesh opening pots this year as the coco-husk fiber seems to attract the soft scale.