The trigger on the Walther will have you reconsidering IMO. It is not their Quick Action trigger just the DAO only which has been awful. I love my M9 and have not had any problems and they are going quickly.
I believe who was talking all the smack was a troll named cornbread. He would rave on and on about possible AD and full-auto with no real evidence. He eventually got kicked off the board, but he's has done the same thing on other boards.The only bad thing I've heard of the Steyr is a post on Glocktalk about sear failure. The post mentioned that the loaded Steyr could fire at any time if the sear failed and that it was unusual that a gun would be manufactured without multiple redundancies to prevent this.