Well, I've had two sodas, still have one, well my wife does, she still loves it. I've also had a Merlin Jones and tbh the finish welding on the tai soda is just as good, and as good as any of the Lynsky frames I've seen. Never had any problems with any of them touch wood, but neither my wife nor I are heavy.
I sold my first frame after being seduced by tales if flexyness being bad and I bought a Ti 456 cos it was 'the best hardball ever' didn't like it at all, just dead, turns out I liked my old soda a lot more than I realised when I had it. What a single track bike with 120's on it, just put a smile on my face, which is why I ride.
Also had Souls, 2 of, like them too. As for comparing Ti and Steel feel, factually the Ti is more flexible, but in reality tyres- size, volume, sidewalk stiffness, and forks travel, damping, seatpost, material, saddle, rail material and bars/stem material, wheels, type of spokes, hub all have such a large part to play unless it's a side by side test with like for like components in the same conditions, I think broad statements like the steel rides'better than the Ti are pointless...
Just enjoy your bike.
As for the Soda's passing. Keep your eyes peeled, they crop up s/h every now and then, it still is a great bike, well if you have one