Best Upgrade for 1,000- for my system

I have a pretty good system, I am about to get a 1,000 bonus from, work and I am just watering at the mouth on how to spend it, although I cannot decide.

My system is made up of:

Cal Audio cl-2500 preamp/processor
2 Harmon Kardon 7.1 amps
707 es Sony cd player
560d Sony Dvd Player
Lovan stands
Monstor Power 3500 Power Conditioner

Dynaudio contour 3.3, T2.1, Audience 52 (rears)

Audioquest Caldera, Anacondas,

I was considering a, Ps300, Power director, or Richard Grey unit, either 400 or the 2000

I think the power conditioning is the biggest weakest link, let me know your thoughts