Just use the first one "Graphical Revision Mod ".
Gef3 converter mod is included, AFAIK.

Cool, Thanks

I just thought I'd update and mention that the GiantsWD folks are working on an unofficial 1.5 patch which is close to finished. It includes bug fixes, gameplay balance changes, graphical improvements and a bunch of other stuff. It seems to supercede and make obsolete some of the older mods mentioned at the start of the thread. I haven't tried it yet, but it sounds great.
I'll end with one of my many GOG suggestions that probably won't be done, but: When the patch is done, it would be interesting to have both the 1.4 patched version (the last official patch) and the 1.5 (unofficial, but theoretically better) versions of the game. This game is so glitchy that the latter might be better for everyone.
Final change list here: http://www.giantswd.org/forum/viewtopic.php?t=1962
Discussion thread here: http://www.giantswd.org/forum/viewtopic.php?t=1888

It is nice to see all the mods available for Giants. I think I might have reinstall and play it through again.

The unofficial patch includes all the most important works on Giants.
Yes, it makes obsolete many older mods. Runs well on the Gog version (I'm at the beginning) and let play also in not-english languages.

So, this Graphical Revision Mod compatible with gog version? Can anyone provide some compare shots?

hay, I installed the 1.4 patch / GRM / Giants hook
(in that order)
now it tells me I need to insert the CD .... how do I fix it?

It's a shame that people only play mecc rocket arena. I wish people did the base vs base mode, that was the real jewel of giants.

i don't own the GOG version, but i can confirm that 1.5 beta (1.497) patch from giantswd, includes many many many bug fixes and graphical improvements (except smoke effects and flares).

If you plan to play online, 1,497 is necessary since all the active servers use that.

I was kind of confused about that. None of the mods seem to be compatible with 1.5 but then 1.5 itself seems to feature loads of improvements - so what's better, the various fixes and upgrades for 1.4 or just a straight upgrade to 1.5?

Late reply, but it looks like 1.5 includes everything you need. I wonder why GOG isn't distributing this version.

hi,
i also have the problem with missing CD after installing patch 1.5.
How do you play it with 1.5?

...

Though I am able to play the game with the 1.5 patch just fine it had the side effect of turning all the landforms into translucent, if not outright invisible, blobs. It makes navigating terrain a bit tricky as you might imagine.

EDIT: Changing the graphics options to "Direct3D 7" seemed to fix that.