I want to buy the new earbuds. I love PK1 and MX980, but have to thin sound for me. BLoX TM5 fall, because is unavailable. I thought about the Sennheiser MX880 or Sony MDR-E888LP - which are the better? Maybe other models? I can spend 100$ for new earbuds. My portable source is iPod Touch 4G. I listen Rock music.