The 23/1.4 will be much larger. Yet I am waiting for the 23 as well. I guess I like the 14, 18,23, 35 lens kit better. I can see buying a used 27 in a year or so. I do like the idea that people will think you don't have a serious camera just because of it's size.
Obviously this is completely subjective and I'm sure photographers have been discussing the virtues of lens' kits for many decades.