3-4k range will put you into a nice system. The size of your room and any constraints would benefit us in helping you. (size = wxdxh, constraints = WAF, bookshelf vs. towers, size, willing to but ID or only from a brick and mortar store)
Speakers to audition should be:
B&W
Dynaudio
Paradigm
Monitor Audio
DefTech
AV123
One of the new Yamaha or Onk AVRs would get you into a great processor with all the latest tech. at a very affordable cost. Look for the Yamaha RX-V663 or the Onkyo 705.
For subs, I would look at SVS, HSU or the new AV123 MFW15.