>>38228635Gen 4 and 5 ones
4th for designs, teams and gym layouts.
5th for their involvement in the story and teams.
Gen 1 and 2 ones are in the middle. They are not anything special in their respective games but HGSS made them more interesting due to interactivity you can have with them outside of their gyms.
Gen 3 and 6 ones are the worst. The former have the worst designs in the series but ORAS gave them a little more personality. The latter are not anything special (like in gen 1), don't have massive marketing to back them up and most of their teams kinda suck.