I personally say "ont" and my girlfriend makes fun of me because apparently "ant" is the "normal" way to say it (according to her).

I've always said ONT. She's always said ANT.

I've grown up at Southern California and so has she.

The only thing that's different about us is that my parents are from Taiwan and I basically learned English on my own and she was born in West Virginia, her parents are from the east coast and midwest.

So there...toe-MAY-toe, toe-MA-toe lol...