I can tell from my experience with different STRam modules that the Falcon Wings model does not work well at all (this module was reddish in color and was shaped like a "T" with 4-4mb simms that sat next to the disk drive). The atari modules also were not the greatest. The ones that worked the best from Rodolphe Czuba and Peter O. I believe he was from Czech Republic (if I am remembering correctly). I have personally used all four of these modules and the last two were the most stable for me. The first two gave random crashes or would not even boot up at times. What kind is you module??
