Well, if I were to judge simply on my top 5 for Last.Fm (in order of listens)
Pearl Jam
Screaming Trees
Alice in Chains
Dream Theater
Seventh Wonder
And various other Classic Rock Progressive Metal/Rock bands
This however, has changed somewhat over the past year or two. I've grown a bit weary of Progressive metal since nothing in the genre is really progressive anymore, and has come to be a bit more about how fast, how complicated, and how to maximize the amount of time changes. Not always a bad thing, but it grows tiresome on average listener.
Nowadays, I'd say my taste in music has changed to be a bit broader.
Tycho - a chillwave group that got me into some other electronic groups
My Morning Jacket - Angelic vocals, progressive-esque drumming, a booming bass, full on-rock band.
The Avett Brothers - Folk, not a Mumford band
Elbow
Fitz and the Tantrums
Silverchair
Nick Drake, Bon Iver, The National, Sigur Ros, Unwed Sailor, Azedia, Counting Crows, Pearl Jam (still up there), Coheed and Cambria/Prize Fighter Inferno, Jason Mraz, Gary Clark Jr. All bands/groups I listen to on a weekly basis.
Some examples, and I see that my tastes have changed from preferring full on hard hitters to preferring the nostalgic and familiar feelings of folk and the musical dynamics of post-rock, which when combined make some great "Indie" tunes. Also grown an ear for listening to well made pop tunes. I find myself preferring Silverchair's recent (a few years old) "poppy" albums over their alternative/grunge ones.