I'm going to put this out there for anyone considering purchasing one or the other bicycles and wondering which one is right for you. As I've had some time with the Moulton now I can give my understanding which bicycle does what best. Of course the Moulton is not a folding bike but once you get the hang of taking it apart and putting it back together it's pretty easy. First the ride. The Moulton is a very sluggish bike at a stop light. It's heavy and is no where as fast as the Brompton from a dead stop. I have rode with road bike riders with a Brompton and at every light for the first 200 yards I was out first. That said the Moulton is the faster bicycle but not by much. I'd say about 1 to 2 miles an hour faster and if this is important to you than the more power to you. Where the Moulton does shine is on gravel. I'm riding with 28mm Schwalbe Durrano tires and the bike did just great on gravel. I could not imagine a better bike on gravel with 28mm tires. Now I have also riden the Brompton on the same gravel and it did okay but there is no comparison between the two. The Moulton wins hands down. As far as stability again the Moulton wins. As you come to a stop the Moulton is solid and stops as well as any full size bike I have riden. The Brompton is a little unsure of itself at a stop and needs some attention as do most small wheel bicycles. With this said would I buy a Moulton over a Brompton and the answer for me is no. The fold and the easy way it is put together out ways the better riding Moulton. A few weeks ago I had to bring my car in for new tires and I took the Brompton and rode home. It's just too easy with the Brompton where the Moulton would have been a real hassle. Also the Moulton takes up much more space in the back of my car. Whereas I can get two Bromptons in the back of a Honda Crv the Moulton takes up the whole back. Now I have never traveled on an airplane with either bike but I'm sure the Moulton is much more difficult. I will say that the Moulton is not very difficult to put together and I thought I'd have a hard time with it but no. It's not an ordeal and the front and back go together very quickly but it is no Brompton. For me fold wins over ride because the Brompton is close in riding. Also what you get for your money with the Brompton is much better. I paid $1500 for a used Moulton but would not pay the $3,500 for it new. Another issue with the Moulton is you have to be careful not to touch the small little cross welds on the frame. They are not strong and could break off if you are not careful. So Moulton or Brompton for me the Brompton wins. That said I'm very happy with the Moulton but would never pay full price for it. It's a bike for someone who has more money than they know what to do with. That is not me so go with the Brompton unless you can afford the Moulton without feeling pain.