Jasper and Felix were my picks for my first son. In the end I decided on Jasper for the first boy and Felix for the second but then my H won and we didn't use either name I like them together. I used to like Archie too but then I taught a couple I didn't like It's a cool name too though. Archie and Jasper are both top 100 names now- I'm pretty sure Archie is the most popular of your choices.

Other names I like with Felix:
Griffin
Otis
Miles
River
Jensen
Digby