Pearl,
What type of music do you typically listen to and what price range do you want to be in? Speakers were my biggest upgrade to SQ in my system. This is where you want to spend your money... Paradigm are good speakers, but I hear they are better for HT than Music. If you listen to a lot of jazz, classical, vocals and instrumentals, I'd check out Vienna Acoustics or Sonus Fabers. Vienna's (Hayden) have the older box look you are seeking and sound really nice. You can also pick up Sonus Fabers for a good price on Audiogon or Ebay as well if you look. Most people love these speakers from what I've read on forums. I just picked up some Sonus Fabers for a bedroom system I am doing. Depending on how much I like them, I may consider getting Cremonas for my main system.