I've got some of each, and I tend to find that Navwar ones are better casts.. but i'm sure there are some on here that have bad experiences. bound to be, by laws of average!
I find both can be useful though, as they tend to have slightly different designs, especially on smaller ships, so you can easily represent different 'groups' of ships in the same class, for example when they have different arments or torpedo layouts.
for photos, I have access to Japanese ships, Italian ships, and my Brother's unloved British ships that just got sprayed grey. Also, I'm just painting up some WW1 Austrian and Italian ships. If any of these would be of any use to you, i'll get some online. However, I suspect if you trawl through this forum there are probably some pics floating about.