Depends where you live. E6 processing is still easy to get here for everything except 5x7 film. But any
of the current chrome films will handle yellows and oranges much better than color neg film. Things
like Portra were engineered to give pleasing skintones, which means muddying up analogous natural hues. Orange becomes dirty pumpkin. Ektar is indeed an improvement in this respect, but it's primary
flaw is right at the edge of diffentiating yellow-oranges from either yellow or orange; but it does a remarkably good job with warm and neutral earthtones.