Showers, definitely. The last two places I’ve lived didn’t have bathtubs anyway, but soaking in a bath never appealed much - I found it boring and the water would get cold too soon. A shower means I can wash my hair at the same time, too.
I don't have a bath, but miss them so much. I don't know that it's a matter of one or the other. Showers are wonderfully refreshing, baths are fabulous for a long soak with epsom salt and essential oils.