As I've said before, the Jetstream series is my favorite of the Dahons... and this one is definitely the best of that bunch. I'm not sure that I would pay that much though over a custom Brommie... though I can see why one would be tempted. Beautiful bike. I wish I could give you a more definitive answer than that, but we're talking about two great bikes.

As jur notes, the Brommie will like keep its value longer, but the Jetstream is likely to be a bit more versatile. I guess it comes down to whether or not you require or truly want that versatility... and whether resale value is important to you.