Is DEQX a game changer?

Sounds like you are very lucky to be getting a very thorough demo.
Might be hard to remove once you hear it's magic?

Bifwynne
Measuring outside gives plots on the software where the first reflection is quite distant and easily identified - this helps greatly with the accuracy of the calibration

Measuring inside does colour the result and when I compare by listening, an inside measurement/calibration sounds more hollow and artificial whereas an outside measurement results in very pure and neutral sounding music

If your dealer is willing and the weather permits, I strongly recommend you take this option. It will really show how special this processor is

Psag, illuminate me. How the heck am I going to move a 100 pound speaker and a 75 pound amp outside. And what about power connections. I'm sorry ... I'm just am having a problem figuring out the logistics.

If you measure indoors, DEQX will hear room effects and the calibration will be much less accurate & the finished result compromised. It can still be effective, just not as good as it should

Here's a youtube video of someone doing it from their car (white coat optional !!)

http://www.youtube.com/watch?v=n1tSsj-DK1A

If you live in a house with a garden then great & use an extension lead, if you don't then I guess you have no other option for now

So, if you have to go with an indoors measurement, lift the speakers up in the air ('platform' in the centre of the room, put the speaker on it and measure one at a time of course, making sure you record which measurement relates to which speaker), preferably angled slightly upwards - cover the floor in front with cushions and other soft materials to kill the reflections as much as possible

If the dealer is doing it correctly, he will know all this anyway