I had a model 431 for a few years. That is a 3" fixed sight in stainless. I had good luck with it and actually wanted to have it "Jazzed-up" a bit and sent it in for Mag-Na-Porting which turned out great, but they refused to do the trigger work I wanted as they have (or had) a policy against anything but porting on Taurus products. I didn't question it, just let it go and figured to find someone else to do the work. Well, I saw an ad in some gunzine for the Taurus custom shop and figured who better to do my trigger job, guess again, the revolver came back with a great trigger pull, but wouldn't ignite any primers with a DA pull. Whoever did this "Trigger Job" is certainly no Gunsmith, as all they did was a little halfa**ed polishing and cut a couple of coils off the mainspring. I sent the Revolver back with a very detailed letter explaining the problem and after a quite long time got the revolver back with no change other than a new mainspring which gave me back the original trigger action. I sold the pistol and chalked it up to experience.
I've had good Taurus products in the past and really miss a .357 I sold when I "had to have" a Semi-auto, but my .44 experience really soured me on the company.
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TJS