I'll be joining the London rat race again soon and am planning to buy a folder. I'll use the bike for my 5 mile ride to the train station, taking on the peak hours (ie packed) Chiltern line and then riding to work in central London. I'm in the US at the moment and so can get a good deal on a Dahon Helios P8 (£280ish) or Speed P8 (£225ish) compared to the £560 or so for a Brompton L6.
The only major disadvantage I can see between these bikes and a Brompton L6 is the difference in folding size. The relative folded sizes are:
Brommie: 22.2" x 21.5" x 9.8"
Dahon: 23" x 33" x 11"
So, do any peak hour train commuters have thoughts on whether the smaller size of the Brommie is worth the extra cash? Is the larger Dahon folded size an inconvenience or is it still easily manageable on the train?
Thanks a lot!