yangmusa, thank you for your comments.
I did not vote against Birdy just because of one single bad criticism about it. It must be the reviewer's predilection or size that made him unhappy about it unless he was trolling. Mine was just a logical deduction "IF" Birfy ride is no good. I will commute 30 km a day, folding the bike once for a motorboat transit and sometimes for a bus ride back home if the weather gets nasty or I feel tired. Brompton is quite enough for my 43 year age. It folds small, light and cheaper than Birdy. Anyway Birdy is in the top of my list due to its reported ride quality (and looks as well ). Justifying the price tag is not easy though.