Hi,
I have Greatest Airliners 737 Pro and PSS A320. I find that the GA 737 is far better then PSS A320. Greatest Airliners 737 will also work on FS2000 aswell as 2002. The overhead panel on the A320 is not as good as GA 737 and some of the switches don't work. The visual model might be better on the PSS A320 but overall I think that GA 737 is more enjoyable to fly on FS2002. Plus the video in the boxed version of GA 737 is much better the the PSS A320 one!
This is the Avism review:
http://www.avsim.com/pages/1001/drea...737/df737.html
Regards
BAe 146-100