I use the clear slotted pots too. I grow my Phals in them with spaghnum moss. I really like them! I also use the clear aircone pots. I really like those too.
i just tried the net hydroponic pots myself and i am hooked, they are cheap, come in all the sizes, and breathe easily for my cats and such....the little ones are great to use upside down in large pots for increased ventilation, and for plug babies....love em!
I agree, net pots can be great for some orchids. They're getting more popular here in south Florida. I have several orchids in net pots right now.