I think it is awesome that all these SFC3 mods co-exist.
Nanner's Mod has a great variety of ships in it and is a lot of fun. So is TNZ.
Dominion Wars is consistently the top download on SFC3Files, and there's even another mod there, called New Worlds.
That makes 5 full blown SFC3 Mods that I know of.
I'm going to see if I can get TNZ, Dominion Wars, SFC3Net, and my own mod to all exist in the same install. haha.