I have to travel to Copenhagen for the first time. Will be a business trip so flying J.

My choices are: SAS, LH, UA, DL, AF on either A318 or A319.
it looks like the 318 has a more preferable layout 1-2-1 vs 2-2-2 which puts DL and AF in the lead.

I have no status on any of these carriers. Any recommendations on which to choose if comfort is my main objective?

Thanks,
Herrick