Yeah, the hiss bothers me more sometimes than others. If the next revision ACTUALLY GETS RID OF THE HISS, I'll buy it. Otherwise, no reason to upgrade from the same company, especially with no FW update. Don't get me wrong, I love my brick, but those two issues still kind of get under my skin.
Update on my player btw: I had the rattling issue a user stated earlier. I ripped it open to check it out, seems the screws were very very loose holding the PCB. I got all hopeful tightening them down, thinking "OMG am I finally going to have hiss free sound?" No dice. BUT I did also note the exact same holes in my battery! Turns out the headphone/line in jacks kind of jab into the battery. No acid, but still makes me very, very worried.