I think all this comes down to, is who you'd date IRL.
Judy is a lot warmer, and tends to display feelings more, and Panam has more banter, and likes a more boyish/locker room jibe. Judy seems to prefer a Dad joke.
I think out of the two though, I'd be happier with Judy.
Panam likes you, but in the end credits, she's apologising for for being around much and will "make it up to you".
Judy just gets in touch to tell you that she's looking forward to seeing you, and isn't afraid to tell you she cares. If you ever were disgruntled with not spending time with them, I feel Judy would genuinely be Empathetic to your needs, but Panam would go on a rant about how she's got so much to worry about and why aren't you supportive of her.
Panam, as I've explained in another thread is ultimately toxic.
She cares, but everything would be on her terms, or make you feel she's going to make it up to you but be one of those stereotypical workaholics that would constantly have to "make it up to you".
Judy would actually make it up to you.
Judy I feel would compromise.