Yes, the sound from S4 and SP10 are very different.  

Everything is bolted down or well connected with raches inside so more than likely, no more scary moment as DOA S2 that either didn't power on, or powers on but LCD doesn't come on.  LCD ribbon cable now even has really tight grip connection to the LCD pcb.  

Anyway, I will try to come up with more hands on data for you guys!!