I feel I get the best pump, full ROM and a good hold on my toes by doing the 45-degree sled. I haven't been able to get all 3 of the above from another exercise.
Usually though, I go superset of 45-degree sled & seated calf raises, then pump out a few sets of standing. Every other week I switch and do standing first, then the superset.
Unfortunately, my calves are my worst bodypart, so I'm hitting them 2-3x/week and am starting to notice improvement.