It's not the material, it's the manufacturer that counts. Thomson makes great posts and their's is often the standard by which others are measured. That said, I use a Syncros Ti post on one of my bikes and like it very much. Too bad they don't make it anymore. I hate USE posts because of their fiddly clamp. Campy is hard to beat, classic. In the end, it's just a post. Most won't notice the difference between alu, Ti or carbon so what sets them apart is ease of setup and how well the clamp works. Hard to beat Thomson.