I prefer
Conor.
Calum hasn’t specifically got a bad sound to it, just the whole name put together I dislike.
Conor is boring but I can live with it.
I prefer the
Conor meaning - lover of hounds. My cousin is obsessed with dogs so it would be great if
Conor was something my aunt considered for her if she was a boy.
I would spell them
Connor and
Callum because that’s my preferred spelling, but it really depends on the person and where they are from maybe so I don’t think that would be a problem.
I’ve known a
Conor and a
Callum so that’s what I think of. I don’t remember much about Conor/Connor (I’m not sure how he spelt his name) but
Callum was this clever kid I went to school with who had auburn sort of hair, freckles and was great at gymnastics. Another
Callum I think of is from the book noughts and crosses by Malorie Blackman. I’ve not read the whole book but from what I did read he was quite a vulnerable character. Also the names give me the same kinda impression aside from those associations.
I’m from the UK and I pronounce
Calum with two syllables.
Also I could see people wanting to use these as girls names in the future.