95 % of the time I shoot with 220 rolls of Fujifilm’s Fujichrome Provia 100F. The Pentax 67II gives you 10 images on a 120 roll, and 21 images on a 220 roll. Using 220 means I get one extra shot compared to shooting two rolls of 120, processing is a little cheaper and I spend less time changing film. 220 rolls of Provia aren’t available on Amazon but you can get them from B&H Photo.
I use Provia 100F for it’s ultra-fine grain, and great color reproduction. However, I sometimes use Provia 400X if I have to shoot on an overcast day or for fire festivals. (Provia 400x is not available in 220 so I use 120 rolls)
On my next trip as I’m going to be shooting some landscapes (hopefully with blue skies and cherry blossom) so I have also got a couple of boxes of Velvia 100F for higher color saturation. I wouldn’t use Velvia for portraits, for this Astia 100F would be a better option.
I have only used Kodak products a few times when film was specified by the client. I am sure they’re great, but I’ve just got used to using Fujichrome. Kodak shouldn’t feel too left out however as it’s a Kodak sensor in the Pentax 645D so I will be shooting with both Fuji and Kodak in the future.