I have Two gears on my brompton, the first two weeks I had It I was looking up options to make it a 6 gear. But after a while I got used to it and currently I wouldn't want the extra weight of a 6 gear. I can do some hills in the lower gear as long as I keep my speed up and the high gear is high enough to go up to 30kph easily on flats (It's a commuter so that is more than enough for me);