Most of the coins you have mentioned there are OK for me, but if you are really considering a single option, I will go with NEO straight up and maybe consider CVC too. NEO looks very promising and I am really looking forward to the how the whole ICO regulation thing is going to play out and the effect it is gooing to have on NEO's value at the end. So, this one is definitely not to be discarded.
None of them. Bitcoin will survive.
I really like that! Looking at it ehough except for the 3x - 5x profit that most of these altcoins give, sometimes, it is just safer to just leave your eggs in bitcoin basket. However, like they always say, it is still usually good to diversify, most especially if there are some good altcoin projects that can really make some moves later on.