I do agree that since 7200rpm HDs arrived there has been a significant increase in both noise and heat output, even with the use of FDB (AFAIK all but WD use it). However Maxtor PATA HDs have Acoustic Management sw which can make them totally silent and without impacting perf too much ... best in my eyes. Otherwise Seagate would be the next best choice, not as fast as Maxtor or WD but known to be quieter and cooler ... still audible to us picky ones I'd bet.