DQ actually bought out Marukai as well, although now they will only have one Marukai store.  Food-wise, you can pretty much find everything that you would find in Japan.  The only thing Japanese do better is with the hot food offerings.  Not to be racist, but Japanese chefs do a much better job at taste and appearance (i.e., bentos, sushi).  But DQ/Marukai is OK for local purchase.  I wonder what Japanese tourists think of DQ/Marukai bentos?