I've been building a new two-channel system over the past few months. My system now consists of:

Speakers: Fidelity Acoustics RFM-2
Integrated Amp: Krell KAV-400xi
CD Player: Naim CD5i
Network Music Player: Squeezebox 3
Interconnects: QED Qunex 1
Cabling: QED Silver Anniversary XT
Shelving: Quadraspire Q4
TV: Sharp Aquos LC-37D62U

I'm trying to determine my next upgrade. Some ideas I'm toying around with are:

1. REL T-3 subwoofer. I live in a condo, and I'm looking for a small musical subwoofer that won't disturb my neighbours

2. Rega P3 turntable, plus a cartridge and phono stage

3. I can't believe I don't own a DVD Player! Deeply considering an Oppo 981. I'd prefer to purchase an HD Player, but I'll wait until this nonesense sorts itself out.

Any recommendations on these upgrades, or others to consider?