I got 5 orchids from a lady that did not care for them. I would like to help the poor plants. The one in the picture has this ugly, big, black spot. Is this sunburn?
Sure looks like sunburn to me. Your Phalaenopsis looks pretty good though. Lots of healthy roots are good. as far as pot size goes, I think the one it is in is fine. Just don't let it dry out too much, it looks like it may be a little on the dry side. Keep us posted.