Streamtuner vs. default Media Player

Default Media Player buffers noticably slower than Streamtuner, but on the other hand the playback never stutters when opening other applications which push up the CPU.

While Streamtuner is more sensitive and sound sometimes skips when starting or working with other applications.

Is it because of the two facts that Media Player has a higher process priority, plus the extra buffer makes it play smoother?

Opinions?

Interesting when I kill the streamtuner process, the radio keeps playing. Which process is responsible for that?