Delta 100 (120) developed in Pryocat-HD for highlight-control, fine detail and grainless rendition. APX100 (35mm) in Barry-Thornton's Metol 2-Bath for foolproof 35mm photography with in-camera metering. APX100 and FP4+ are to close together for my taste to use them both side by side. I do not use Tri-X.

Stefan