Dahon EEZZ - a bit smaller than B'ton. Weighs less I think; some folks complain the
folding is more complex than B'ton. Discontinued; can be found for US$600.
Dahon Curl - copied B'ton's fold, so similar in size. Price & weight is about the same.
Chedech - copied B'ton's fold, so similar in size. At over US$2,000; more than standard
6 speed B'on but weighs less. 6 speed titanium/superlight Bi starts at $2,400 I think.
Bike Friday pakiT can be custom ordered; frame size, gearing/speeds, components(belt/chain/
der./IGH/etc.). Usually cheaper. Folding is more like dismantling.