trying to upgrade speakers

Green Mountain Callisto. I listened to all the speakers you have mentioned and the Callisto was the one I went back to every time. I waited two months for mine to be built and it would be worth waiting a year. My room is approximately the same size as yours. The Callisto is NEVER fatiguing, always enjoyable and still amaze me how musical they are. Most enjoyable speaker I have owned in 30 years. They play all music as a speaker should at all volume levels.

Does the dealers do a home demo program?

http://www.6moons.com/audioreviews/gma2/callisto.html

nobody offered a home demo on any of the speakers that
i demod.
do the callistos require stands?
just to let you know ,i am fairly new at this high end
stuff thats why i am uncertain about ordering speakers
by mailorder. i did that with the mobile fidelitys
and after a while realized i wanted something with
a better midrange and bass.

If new to all this hifi stuff, you owe it to yourself to experience a panel speaker prior to purchase. Some of the more popular brands include Magnepan, Martin Logan, Apogee, Sound Labs, Eminent Technology (which I own), etc. I'm sure others can give additional ideas.

Some people are cone people while others are smitten with the panel/planar sound. Possibly check out the MUG website (Magnepan User's Group) since it also includes threads for many other panel speakers. If you are near a major city, there should be one of these brands available to audition.

Once you have that settled, it will be much easier to concentrate on specific brands.