I also have a P229 SCT as my bedside gun and like the idea of a tac light on it.
I tried two TLR-3's and both broke rather quickly. Plastic snapped same place on both. The light is
bright, and shorter than most which I liked. It fit the 229 perfect.
Streamlight was very good about replacing it but had to find something else. I went with the TLR-1 and have 0 problems with it. Take it off at the range occasionally, and to clean the gun and it still fits tight, is plenty bright, hasn't left any ugly marks, and seems to be holding up very well. The TLR-1 has metal where the TLR-3 had plastic, and I'm willing to bet it will be around for quite a while.