I've had great experiences with:
Redding: I had a part break while I was reloading and sent them email. They said they know it happens (it was a decapper pin and sometimes they just get off axis and break when pressed) and sent me three replacements. They also noted that if they break in the future, just let them know and they will replace them.
H&K: now this is great because of the web meme that (H&K) says, 'You suck. And we hate you'. In fact, I had a non-trivial ka-boom with, of all things, the mighty P7M13. I few bits of flying brass, blackened arm, and a flying ejector (that part's complicated - but TMI). No real harm though. But it was with a gun show reload (lesson learned). They could have said, 'You suck. The manual states not to use reloads. Oh, and we hate you'. But in fact they paid for shipping, free parts and repair, total cycle time from when it left my hands to when I had it back was 5 days. They also fully serviced the gun, shot off some functional test rounds, and sent a nice note back apologizing, citing the work they had done, and adding that it was in excellent condition and to contact them if I needed anything in the future. I definitely didn't feel like I suck. I've since purchased seven other H&K's.
Contrast this with the other thread on the Remington trigger recall (and R51 comments). Half in the thread state that they are doing what they have to do and expecting more condemns one as part of the 'taker' generation. This thread proves that by doing the right thing for the customer ensures that customers will keep coming back.
B