I would have to say GW, primarily because it also includes the NYGM Damage system. The rest is very well thought out and implemented.
If you run GW with the included (but not default) Stock Sea Floor and No Mines mods it should not really be too much harder on your PC. Even if you have to strip out a few more things, I think it is the way to go. It is what the initial release *should* have been - everything up to now has been beta
