Often, there's specific attributes that gain favor: looks or performance.
I consider myself to be quite visually inclined; but, when it comes to machines(locomotives) that are expected to perform, it's the capable performers that I value the most. Useless good looks don't have any real value.
I have models of many different locomotives; and, to be honest, none are really what I would call good looking. Visually, when I look at pictures of my locomotive collection, F units probably show the best.
In real world railroading, modern GE locomotives(nothing special about their looks) have earned my admiration; they seem to get the job done, for the industry. For some reason(s) that makes having a model or two, of GE road power, more satisfying.
I guess I'm not that shallow after all.
Rick