Worst of all is a pot with no holes and planted directly in it. You could never ever know what's down under that plant, could you?
Another no-no for me is those 'african violet pots' that are supposed to self water. Has anyone had success with those?
I like a cheap nursery pot that fits nicely into a solid prettier pot. Then you can water just till it drains, with rainwater so there's no mineral buildup. Unfortunately, if you overwater by habit, the plant can be sitting in water.
I have a pothos doing very well at work, though. It started out as a plant too small for its large pot. But with limited weekly watering, I think it always had enough soil under the plant to soak up extra and not rot the roots. In 2-+ years I've been the sole caretaker, it's gotten appropriately huge.
I took my sad Christmas cactus out of its terra cotta pot today. Pitiful small amount of roots. So that explains its sadness. Well, fresh potting mix and new plastic cheap nursery pot... we'll see.