Brompton owners

I went for 2-speed due the weight-saving, though it's not a major difference.
I wouldn't go for 3-speed normal gearing as its too high for stuff a brompton needs to do.

3-speed -12% looks the best to me
https://brompton.zendesk.com/entries/22354981-What-are-the-Brompton-gear-ranges-and-ratios-

Interesting, thanks.

when is the weight really going to make a difference? if you carry it for any length of time you just unfold

Yeah, I'm more interesting in having the right gears and something low maintenance. What's the Brompton derailleur like? Is the hub gear more reliable in itself?

+1 for 2 speed.

As i wanted a brompton for the transportability, the lower weight was a + point. I don't really care about riding fast on one - they're essentially pootling bikes, so 2 speeds is fine.

I'm not but I think I'd find the 2-speed limiting. I think I'd like a pootling gear, as well as an easy and a fast gear.