Bookshelf/subwoofer combo

A good match for what? What's the room size? What's the end goal? More details needed.

What sound characteristics are most important to you, and are you looking for new or used?

Bookshelf match with subwoofer. Room is living space approximately 15x20. End goal, the best 2 channel I can get. My past experience was 25 years ago. The bookshelves had a soft dome tweeter with 6.5 inch ported enclosure coupled with 2 12", powered subwoofers. I loved the sound. Most listening levels will be in the 60 to 80 db range but in the 90's on the rare occasion. The sound, open, detailed, a little laid back and good sound stage. That's what I had.

What are the components you are considering to drive the speakers?  Solid State?  Tubes?  Brands you're looking at?  Sources: Vinyl, Streaming, RTR?  Type of music you listen to?

This info will help members give you suggestions.  I look forward to following.