What they said.
Another reason not to over pot is that it is too easy to overwater a plant that is in too large a pot and it can then easily get root rot. Some plants (like many ficus) grow quickly when in active growth, so you can maybe bump up the pot size a little, but if you're unsure, it's best not to over do it.
Since you asked about pot preference, another thing to keep in mind, especially with larger plants that develop aggressive root systems, use wide-mouthed pots that have openings as wide as or wider than the pot itself. Reson being is that if you let it go too long before repotting (as we all have a tendency to do - or at least I do!) then it can be a real bear to get those plants out of urn-shaped pots filled & clogged with roots. It can be detrimental to both the plant and to your back! Ask me how I know...
