Isn't Reala supposed to be the finest-grained print film?
I started using it because i saw some pictures on Flickr by "stpiduko," made with a Nikon 28mm lens, and i couldn't believe how sharp and vivid they were. Yes, they're low-res JPGs, but there are some large versions online. Whatever. Even in comparison to the same guy's images with other, similar speed films, and even in comparison to his 6x7 images.... The Reala was spectacular.
I later was looking at a large format book of photographs by fashion photographer/Vogue contributor, Tim Walker. I thought i recognized the 'signature' of the Pentax 67 in his images. I looked for information about him and discovered he shoots with a Pentax, but a 35mm Pentax. And, he shoots Reala.
It's just good stuff. I've always liked Superia, too.
Portra is fantastic, but i seem to like it only in the larger formats. In 120, it's perfect stuff for shooting people. There's nothing like a Mamiya RZ or Pentax 67 image with Portra, if we're talking about 'people' pictures.