went to the emb factory a few years ago and flew the flight test sim they had then. it was pretty nice but I didn't like the inverted v control column. avionics were always going to be a step ahead. ( the scrapped dornier jet projects were the best i've ever seen avionics wise. at the time they said they were expecting difficulties certifying some of the stuff as it was so furturistic.)
performance in reality will be alot less than the brochure figures if you factor in real winds, fuel loads and operating conditions but it will be a very very nice aircraft.
as for the 320 or the 73ng a let down after flying it?? probably nicer than the 73 (which is a tractor) but the airbus still gets my vote out of the three.
strangely enough the control loading was similar to the 146 - so nice and solid. should be nice to hand fly and certainly quieter. the fly b chaps will love it. hope you all have a great time on it.
FS