Mostly good
I've stated all of this in a different thread already but...
My Taurus experience started with the 1st generation of the Millenium series when I picked up a PT140 Millenium. It took a couple hundred rounds to get broken in. Had a couple hick-ups during that first 200 rds but after that it seemed fine and reliable. Times got tougher and I got rid of it...
...Then I was back on my feet again and missed my gun. I went to get another, but by now Taurus had made some improvements and the series was re-released as the Millenium Pro. I stuck with the .40 S&W caliber and now had a PT140Pro. I still carry it. From the 1st shot to the now 2000th+ I haven't had a single malfunction, FTF, FTE, or otherwise. I keep it clean but carry it daily and it has NEVER ONCE FAILED. It's even been dropped 3x now. It does feel like it's better-made than the 1st generation Millenium I had.
I chose the brand for both price and style. I chose the style specifically for concealed carry - it's slim, VERY lightweight, satisfactory capacity, easily stripped, and I like the high vis combat sights. My only complaints about it are: 1) the long, not-so-smooth trigger pull, and 2) has a longer trigger reset than I like. I was told that a gunsmith might be able to smooth the trigger pull some.
You're not likely to make consistent head-shots at 50yds with it. It's plenty combat accurate but I haven't kept the tightest groups with it. I've heard many people say it's got a lot of snap and is a lot to hold onto when firing. I find it very managable but I learned that, at least in my case, I needed to keep a tighter grip on it. With a nice tight grip, I find it delightful to rapidly fire.
Unfortunately I've also heard several Taurus stories that strongly contradict mine. Some have had real probs with their Taurus but most are happy with theirs. I think Taurus' quality is only improving with time. I also have a Taurus 851 CIA that I've been 100% happy with. So place your bets I guess!