Generally, you CANNOT determine the dependability of a semiauto from posts from those owners that got a good one. Such anecdotal accounts, while honest, too often are limited to those who had good experiences with THEIR particular gun. A LGS in a position to sell you different guns is more likely to be more objective and, especially if the LGS has a house gunsmith, an opinion based on much broader experience. I suspect that most shooters, including myself, tend to push what they own. Still, beware of clerks who only know what they read in the latest gun magazine or from a message board.
I don't have one, but if I was looking for an affordable, but dependable, autoloader, I would look for a used Remington 1100.