I don’t have a Ti, nor have I ridden one, but it isn’t something I would choose to spend my cash on, and I’m not a weight conscious cyclist, although over the years I have managed my weight pretty well, keeping 4St lighter consistently over the last 10 years.
What is Ti, other than a selling point, unless a few Kgs is so important to you, that you can spend the extra cash.
Having said that, I paid more for a special paint job than a ‘black’ edition or a standard colour. So feel free to ignore my point!