Either would be fine IMO for that bike. Measure the inside diameter of the head tube (FRAME) and make sure the head set cups are the matching size.

Also be aware of stack height. The fully assembled new head set may be slightly taller or shorter that the old one. You would the need to remove some of the existing spacers, or add some. If the bike previously had NO spacers, make sure you buy a head set with an equal or shorter stack height. That way the stem clamp wont be positioned too high above the fork steerer tube.