This is the second year that I've followed Euro F3 and I thoroughly enjoyed it.
I can see why RedBull/Toro Rosso picked up Verstappen. The flashes of brilliance are there, in qualifying and in raceing, particularly novel overtaking approaches and forcing his opponents on the defensive. I also believe it wouldn't have happened quite so quickly without his father's influence, but most jobs are as much who you know as how good you are.
I picked Ocon as my one to watch after the first weekend of the season. He performed superlatively well in the middle of the season, particularly in qualifying. He was sort of my 'guy' for the season.
With that said, I'd argue that Ocon is just as talented a driver as Verstappen, but not as much of a racer.
When Ocon had clear air in front of him, he was often the class of the field - fast, metronomically precise, with very few mistakes.
However, if he was caught in a battling pack, he seems a little out of place. The season, he's appeared to be unable to put the necessary pressure on cars ahead of him to force errors. Unlike Verstappen, he wasn't climbing all over gearboxes trying to generate a mistake. Instead, he waited for his opponent to make an unforced error, which paid off only rarely.
Then there was his tendencey to make pointless dummies at the end of a straight when he was five or six car lengths back. His continued use of the 'let them know i'm there' tactic at Hockenheim (I think) was frustrating to watch.
All that aside, the driver that impressed me most in the second half of the season was Blomqvist. He scored 212 points in the last four race meeting of the season, compared to 99 for Ocon and 148 for Verstappen. I know this was his third or fourth season of F3, but I get the feeling that even if he doesn't make it to F1, he's got a serious future ahead of him in endurance racing/sportcars.