speaker placement in a tough room, please help.

I would point them firing toward the peak. This minimizes early reflections from the ceiling. I had a layout like this once and the image height was fantastic.

Thanks Rives,the room has a continuous slope from low to high. The room will be used as a dedicated room, I'm a little worried about how small it is, but these days in S.Cal the price of the room makes the equipment price seem almost inconsequential.

Dave: Then I stick with my first response. This is an area that none of the software programs address. You can model things in both areas, but you will likely not get very different results other than some minor modifications in the RT-60 response curve (Reverberation times for 60 db attenuation). Software programs do not address the psycho acoustical nature of what occurs. We're considering do some significant research and development in this area, but it's very expensive.

Rives, thanks for the response. Oddly enough when I had these speakers in a largish room ( 20x15) the sound was actually inferior than in my current smaller room (15x13).
This effect has been noticed by me on numerous systems, the intimacy of the perforamnce and the perceived transparency always seems to be lacking in the larger room.
This new room may be too small though and unfortunately I guess I'm going to have to learn to live with it; kids/wife and high-end being somewhat at ends.

Check out the excellent room setup guidelines at the Cardas
website:

http://www.cardas.com/insights/index.html

Also, try listening in the dark, so you don't focus on the
smaller room.