I'd say TokiKake.
TokiKake brings out the art in a low-toned style, attuned to Mamoru Hosoda's simplistic style, but knows how to match the backgrounds to enhance the look both ways in a Ghibli-like manner. It's also interesting how it doesn't use much layers of lighting behind them and allows the natural colors to work their wonders. Lighting makes thing more 'sparklish beautiful' like how KyoAni and to a degree, Shinkai does their BLOOM layers, but at times, it just feels unnatural.
Animation-wise, it's really animator dependant, but those like Norio Matsumoto and Mitsuo Iso are amazing in the likes that they employ naturalism and freedom in their animation, but knows how to work within the animation limits. Some wack animators are indeed godly, but often than not, they're better for art films than normal animes.