I think Black/White is definately continuing the trend that is the main pokemon series. I especially like all the unique type combinations, like the Ghost/Fire Litwick evos and the Electric/Bug Joltik and Galvantula.
I have Black version, and I've actually already gotten competitive teams setup in my game, at the moment only being able to do Flat Battles on WiFi, but I'm working on a lvl. 100 team. I especially loved, absolutely loved the yin-yang theme of the storyline the entire way through.
My only dislike.... my god, did they think they put enough trainers with at least one of the elemental monkeys? XD