Thanks for the help everyone. Very interesting.
The reason for my withdrawal would be to hold the crypto long term in cold storage, NOT to convert back to fiat. I read that it's better to store it that way as opposed to keeping it on the exchange long term.
However, if I convert it from BTC to another coin for this long-term storage to save the commission, I guess I'm taking a gamble that that coin will hold it's value... maybe BTC is the wisest choice despite the larger fee?