best master cyl for disc/drum combo

I am using a 1977 F10 Nissan 3/4" MC (dual reservoirs, come ready to hook up remotely) combined with the GM metric (2 3/8" dia) calipers. This is on a 2500 pound car with a pedal ratio of 5:1. The combo works well. Plenty of pedal and it is not out of sight hard. In addition, they are cheap and small.

Bill