I was in the exact same position. I first picked up the Graphite and loved it, but I have been wearing SBSS for years and it was a little too similar. The natural Ti kept calling my name, so I decided to pick that one up as well.
I knew I was keeping the titanium as soon as it was on my wrist. It’s just such a gorgeous watch, I can’t stop looking at it. It’s the perfect combination of premium and understated that I was looking for, and it looks amazing with every band I have. For me, it’s the titanium hands down. The fact that I can remove any scratches with a cheap pad from the drugstore makes it even better (although I’ve been wearing it for nearly a week now and it’s still looking flawless).