I don't understand. Your current system provides a deep holographic soundscape so your preamp is fully capable in this respect. You say you want to replace it, but not for sound reason and then you don't say what those reasons are. So why do you want to replace your current preamp?
BTW, most rock and reggae are multitrack recordings with synthetic soundscapes. That can be pleasant and exciting, but really not holographic. I think you want a vast and deep soundstage with good imaging.