The ones youve listed already, I think PSG facing Liverpool may be the end of road for them, despite how Liverpool performance has been their last 3 matches, I still believe that they won't be joking with PSG in this round of 16,  goals are expected to pour in that match, Liverpool has been conceiving in all their matches recent and PSG is a scoring side that also conceive goals though the didn't conceive goals much recently but the match may like be a goal Liverpool to win, Barcelona and benfica match will also produce goals but all things being normal, Barcelona is likely to win this match, feynoord meeting inter Milan not end well for them, inter is a champions league team despite that things has really changed in the recent time, i still believe that with the experience amd old glory I think inter will not be allowing any form of surprise from Feynoord, these are my personal prediction on the available matches as you listed them.