If you're talking about the book and not the political parties, hard to say. The one I enjoyed the less was the last one (blue). The first one (red) was strongly about survival whereas the second (green) was about sustainability. I enjoyed that a lot so let's say 1 and 2 ;)

Mmm, 3 was my least favourite too (though it does tie useful knots in a lot of the story) - I think 2 is my favourite with 1 a very very close second. I like a lot of the world-building in 2 which was less present in 1 in favour of the science :D

For me it's a bit mixed: I loved a lot the science and a bit less the world-building. But funnily enough, I found that 2 had more science (even though there is a lot of politics)

The science parts of the series are fascinating, especially how close to plausible a lot of the non-medical portions are.

Actually, it's interesting to see that some science things are already more advanced in our current world. For example, I expect that we might be able to see quantum internet for instantaneous discussion whatever the distance whereas they don't have it in the books. (1/2)

Or the nuclear fusion which they achieved only in the third book. Funny how sometimes the real world goes beyond the fiction. It's even more obvious in "Foundation" serie: when they read the DNA, it takes weeks whereas we can do it in a few hours now. (2/2)

Oh I *adore* Asimov's worldbuilding and love the anachronisms in his futurisms. Such as the robots operating a physical control panel to operate the video-phone equivalent; or actually speaking to each other rather than using local-area wireless :D

I didn't read "robots" yet! Stop the spoilers right away! :p

You should get on with that. Some of the Elijah Bailey books are wonderful. I imagine Rammstein in my head while reading them since about 2000 when I spent a lovely summer with those books and rammstein on my mp3 player :D

I'm slowly catching up. I read hyperion recently and the "commonwealth" saga from Peter F. Hamilton (well, a few other books from this same author because it was awesome). But I'm going through the big SF hits!