The stainless cylinder is going to be somewhat stronger than Ti, although as has been stated the Ti ones are strong enough. I think the SS will better combat erosion to the face of the cylinder over time too. Only advantage to Ti is weight. In the case of a 329, three extra ounces is likely a good thing rather than a bad one!

Also, the gold bead front sight is better and more durable than the hi-viz plastic one....my opinion.