Jhonn,
I own some twenty bicycles now, (I'm nuts so my wife tells me.) two of them are a 2006 Dahon Speed TR and a 2007 MU SL. If I could only have one bike in this world it would be the Speed TR. Hands down! It's just like you said "all-purpose, take-anywhere folde" It rides so very nice to boot! I own four Dahons and are very happy with everyone of them.
What will be my next bike? A HP Velotechnik foldable GrassHopper fx recumbent.
http://www.hpvelotechnik.com/produkte/ghp/index_e.html