I like both, with some rules.
in reply to a message by New_Chloe
I thought Katherine was more of the original (though I suppose the "K" could still be "modern-looking").
I think it doesn't matter if you go by your full name. I also think that for some short forms, you don't have to have Katherine/Catherine as a full name. Kate shall suffice. However, if you're going to go by a short form with Katherine/Catherine as your full name, the first letter should probably match (so Catherine would be Cate, not Kate).
I think it doesn't matter if you go by your full name. I also think that for some short forms, you don't have to have Katherine/Catherine as a full name. Kate shall suffice. However, if you're going to go by a short form with Katherine/Catherine as your full name, the first letter should probably match (so Catherine would be Cate, not Kate).