It seems that Vicia (faba - Broad/Field bean) produces a honey with a light, pleasant flavour, but one that granulates rapidly (presumably like rape does)
Phaseolus (vulgaris - Common bean) also produces honey - a light, mild taste, that also granulates rapidly.
Most reports show that the crop yield is enhanced by the presence of bees: "In England, caged plots produced 2328 kg/ha, whilst plants caged with bees produced 4332 kg/ha"
Peas, on the other hand, do not seem to result in good honey flows. I think there might be an issue with the flower shape. Perhaps someone else can help as to what is the best pollinator for peas....