I have no experience with European keyways but I believe that most people recomend slimline picks for them.
Only problem with them is that if you are heavy handed they will bend/break easier than the standard set.
I have read that slimline picks will work on European and American locks if you are gentle but standard picks are too big for some European keyways.
Maybe someone with more experience with both types of picks can give you a better answer.
In the mean time search the site there are lots and lots of posts with the "Are these the right picks for me" topic already.

If all else fails, change your syntax and search again.