D,Happy to share what I know. 1st, there will be differences in the anodized/zinc spoke sets due to manufacture quality....distributor....type (whether they are "swamped" or of different diameters) and if they are OEM, and respectivly their availability...Stainless spokes IE Buchanan's are available in different guages (diameters) Lengths (Lacing patterns) and whether nipples are chromed, stainless or anodised. In my experiance, almost all spoke problems are due to accidents & or lack of maintenance. I endorse your' return to an 18" wheel, as it will improve both quickness of handling and weight distribution. luck G