+1 Elizabeth, "...at some point on the upgrade path..."
IMO that point occurs after you have done a dedicated room, correct set-up for the best sound quality, and room treatment. Then, consider a dedicated line(s). The room and the setup are going to determine at least half of the sound you will hear.
IMO that point occurs after you have done a dedicated room, correct set-up for the best sound quality, and room treatment. Then, consider a dedicated line(s). The room and the setup are going to determine at least half of the sound you will hear.