I think they sounded better this year, but I still miss the V10 engines. Engines are getting smaller in all road vehicles these days; Cost is the largest factor, so I very much doubt the V10's will return to Formula 1 cars.
I don't care about the noise the engine's produce to be honest with you. Yes, the engine's are getting smaller in Formula 1, but look at road cars; The same is happening. The smaller the engine fitted to the vehicle, the cheaper they are and by fitting smaller engine's with a turbo helps the power and the acceleration.