I used self mixed D-23 for many years with 4x5" Ilford FP-4. It's a developer easy to make and easy to use. As semi-compensating, it allows broader exposure without burned highlights, it also produces a fine grain. I shifted later to HC-110 because I felt the midtones were a little too compressed. But when I'm looking now at the negs taken with D-23, I can't decide which one could in general be better. In LF (8x10") I would choose the D-23.(posted 9131 days ago)