I'm not going to be much help, sorry...
But I think that the first thing you need to decide is what field of view you want. It really is that simple and that crucial. Once you've decided that basic requirement you can then decide what aperture, model and make you're interested in.
I mainly use primes for several reasons but to be honest unless you're going to take into account how lovely the lens is to use or unless you're looking for something quite compact or intending to use wider apertures (f1.4-4 or so, or are going for a particular bokeh look) I think that your zoom(s) may actually be the most flexible option although there may be a little more distortion at the wider focal lengths with a zoom so maybe that's what you're trying to avoid? I think that once stopped down a little a good zoom will get you 99% if not 100% of the performance of a good prime for normal print and viewing and at least a level of performance at which you'll have to carry out extreme pixel peeping or print very large and view very close to detect any difference between a zoom and prime.