C300 v.s. B328

B328i
Pros: Unmatched ride/handling balance, smooth and powerful engines, upscale cabin, four body styles, 335d's amazing torque and fuel economy.
Cons: Limited interior storage space, compromised rear headroom, options can inflate price quickly.

C300:
Pros: Solid build quality, smooth ride, quiet interior, distinct sport- and luxury-oriented models, hyper-performance C63 model.
Cons: Six-cylinder engines down on power compared to rivals, austere cabin, pricier than most comparably equipped competitors.