The first thing you should do is find your local hi-fi shops and listen to speakers. No one here can tell you what kind of speakers you will like for certain. Seeing how you like to listen to rock, I suggest that you make it a point to listen to some Klipsch Reference series speakers (especially the RF-7). Klipsch will also excel in home theater. Here are some other brands that you should consider for audition:
Rocket/Onix (from AV123.com, use their forums to find someone for a local audition)
Axiom (also an online brand)
Paradigm
Energy
PSB
RBH Sound
Phase Technology
Definitive Technology
Klipsch (Reference Series or THX Ultra systems only)
B&W
M&K
Monitor Audio
Status Acoustics
Aerial Acoustics
PMC Loudspeakers
JM Lab/Focal
KEF
Martin-Logan
Magnepan
Vandersteen
Triad Speakers
Epiphany
This is a HUGE list of manufacturers, some of which offer speakers that are VERY expensive (think >$60,000). However, they all offer high-quality products. I know that you will find something you like in that group. If I were to suggest a narrower group, I think you should check out:
Klipsch
Phase Technology
Martin Logan
Vandersteen
Triad
M&K
B&W
RBH/
Status Acoustics