Between myself and my family members, I have experience with a total of five Taurus brand firearms, and all have proven 100% reliable.
One of which is a Taurus 605 which my mother carries, and it has never had any issues whatsoever.
I've said it before and I'll say it forever, in terms of overall Quality Control, I estimate that Taurus is no worse than Ruger. The difference is that Ruger has some of the best Customer Service in the industry, while Taurus has some of the worst, so folks who get a lemon typically end up with a far less satisfactory experience dealing with Taurus and walk away with a decidedly negative opinion of the brand.
That being said, I only own a single Taurus firearm myself, a Taurus Judge Magnum, and while it hasn't been any trouble, I have no plans of purchasing any more firearms from Taurus, (although I have been tempted by the PT92 and Rossi R92) namely because their prices just aren't that much lower than the competition anymore, and on the off chance that I might end up with a lemon, I would rather not have to deal with their Customer Service department. So I'll opt to spend a bit more on another brand like Ruger or Smith & Wesson going forward.