What's the best tool - a saw or a hammer?
The VII and IX were designed for different missions.
The IX excels on long-range patrols against little opposition. The VII is better for shorter patrols under aircraft infested skies.
The IX will allow you to get more kills per patrol, and the VII will allow you to get more patrols (unless you insist on assigning your IX to the Rockall Bank, contrary to historical practice.)
Earlier in the war, when enemy aircraft are not seen very often, the disadvantages of the IX are negligible. From 1943, I think the dive time advantage of the VII will go a long way to increasing your kills/career, by keeping you alive longer.
Finally, the VIIC/41 could dive deeper than any IX boat.
So pick your boat according to the type of patrols you want, and the stage of the war.
|