I'll reserve my vote, but yes, there's a definite inclination to vote for the old Roketto-dan simply because they were around for longer and revealed their personalities.
It isn't just Kojiro/James. Have you all missed Crossing Paths/Farewell Dokucale, Ignorance is Blissey/Hapinasu the Happy Nurse, DP 117 and the many other episodes which show Musashi's softer side for her Pokemon, her dedication, and her strong love for her team mates?
All three of them had a lot of heart to them.
Best Wishes has only just begun and we haven't spent any large amounts of time with the new Roketto-dan. The only ones who've shown their old personality is Nyasu/Meowth.
The other two haven't had the chance to show much of neither their old or their new ones, aside from being serious, devoted to their cause (despite lack of knowledge of Sakaki/Giovanni's ulterior motives), and avoiding any possibility of commting errors.
Without any Rocket-centric episodes so far and very little seen of our trio's new workings in general, we should wait before we compare.