If you only upgrade one component in HT what is it

I'm with Avguygeorge...get an HD-DVD or Blueray player

Upgrade your source. I've gone from the Denon DVD-5900, to Oppo, to the Toshiba HD-XA2. The Toshiba is in ANOTHER league in regards to the upconverting ability of standard dvd's. The sound is better than the Denon also. Use the HDMI to your Mitsubishi Diamond DLP, and you should see an eye-popping, almost hi-def picture.
If you then want to spend more, go with power conditioning.
Be aware however, that the best power conditioning units cost plenty. (IMO)

Any advice for power conditioners?

My 5cents worth: Get a Blueray player.

"Skclarey":

Your system seems to be strong in all of the most important areas. So I cannot find any one component that I would upgrade. I placed in a corner and in a bind, I would say get a higher end DVD Player to complement your Sony DVP-S9000ES and for 1080p resolution from your RPTV, and I would relegate the Sony for audio duties only (i.e. -- SACD Listening). Aside from that, the only thing I can suggest is a couple of Power Conditioners to clean up the power that's going to your system (one for the audio and the other one for the video). Then afterwards, I would concentrate soley on the room/acoustic treatments.

Aside from what I said, I wouldn't make any wholesale changes to your system right now.

My $.02 worth.......

--Charles--

Skclarey...sorry

I failed to look at your room before posting...my bad. You have a very nice system, I'll start over now.

1. Room treatments....as many as you can afford.

Dave

I have a Monster HTS 5000 and agree that should be on the list too! any recommendations

Well a projector wont work in my room, I have considered another sub, but not enough bass has not been the problem. Thanks for your input

ROOM ACOUSTICS!!!

Spend $2000 (or whatever your budget is) on DIY room acoustics or spend a little more on professionally built room acoustics:

contact:
www.realtraps.com
or
www.gikacoustics.com

Doing proper acoustic treatments will improve the sound of everything you already have in your system and any future products you get will realize the same benefits.

Your RPTV is too small to be useful for home theater use if you're sitting much over 6' away which would provide a 36 degree subtended field of vision.

In all but the smallest living rooms, two-piece projection is the only affordable way to get a sense of immersion comparable to what you have in the last row of a decent movie theater.

Since "black" can be no darker than the screen is, this will require light control in the form of blackout blinds if you haven't built a cave.

1. A projector...RPTV's don't hold a candle of hope, compared to the impact you get from watching a movie on "even" a cheap front projector....bigger, is better, for movies.

2. Another subwoofer...more, is better, for movies.

All....IMHO of course

Dave