LittlePixel, thanks for posting the weights. I've seen it said here and various other places that the Titanium Bromptons are 3-4 pounds lighter, and that is an apples to orange comparison, because the Titanium bromptons are also equipped differently (e.g. lighter saddle and tires). For example, if you want the Marathon tires for reliable commuting, those are heavier than the Stelvios.

If you are looking at the gain for Titanium parts only, it's 2 pounds. That's it. I don't think that's enough weight savings to justify the additional cost, which is why I didn't do it.