I really can't stand Disturbed, they sound absolutely putrid. The instrumentals are boring; the guitar playing consists of one or two power chords per song, with an occasional obscenely simple mini-solo/fill here and there. The drumming is bland and consists of largely uncreative beats, and the bass is in no way remarkable. They lack any songwriting ability, and incorporate no variation into their song structures. Sure, they sometimes add some techno-ish electronics and turntable scratchings which seem to be included for extra melodic boost, but more often than not they just sound extraneous and cheesy.
Aside from their instrumentation being terrible, so is the songwriting. Disturbed take a stab at rap-metal with Droppin' Plates, using Korn-style, downtuned to fuck riffs coupled with incredibly lame white boy rapping. Take the song 'Numb' for example. It is an utterly tepid and insincere ballad that is unable to stir any emotion within the listener. Or their cover 'Shout 2000', which is a totally serious cover of Tears For Fears' famous pop hit, done in horribly generic heavy metal style. Or even 'Stupify', despite being one of Disturbed's more well known songs, is packed chock full of annoying melodies (actually, it's pretty much one recycled melody) and tepid hooks.
I'm not a fan of Filter, but god damn, they're better than Disturbed.