I've picked up a pro-pack of 5 rolls of 120 Tri-X 320 recently. I've never used this film before and, given that it's no longer made, I'm reluctant to shoot several rolls to try to determine what kind of lighting and subjects this film is best suited for. I understand it's excellent for people photography, and that it separates tones well in Zones 7, 8, etc. So how do you suggest I use this film, and what developer(s) should I consider? I appreciate any and all advice.