Wow, MyDad--what a quick decision. There are folks for whom the Kent and the Boardwalk have worked well given particular situations--enough so that you shouldn't bar a person from considering them.
You can modify the one piece stem on the Dahon, though how low one can set it, I'm not sure. And sometimes, some prefer singlespeed. The D7 may be a great bike, but whether it's THE bike for the OP is really up to the OP and his/her situation. Sounds like they're just gathering info. to make a well informed, personalized determination.