Better blades go a long way towards not splintering your workpiece. The Bosch ones are excellent if you get the "clean cuts in clean wood" ones. Note that there are two incompatible shank styles: T and U. Get the ones that work with your saw.
All in all when I needed a one-off cut I used a box cutter knife, and when I needed a series I used a circular saw with a plywood blade. The setup is similar (needs an offset guide) but the cut is much straighter, faster, and less error prone. I think the only time I'd use a jigsaw is for making non-straight cuts like some curved artistic shape or something.