I can see a number of possible defintions. It all depends on what angle you want to look at it from. That's one reason I don't much care for "best" threads as usually there is no agreed upon or even stated defintion of "best". If for instance you take into account resources and manpower I think the Finn's might merit some consideration as best especially in the 38-40 time frame. Depending on what kind of operations and whether you are looking at overall capablity and how you are defineing the various sub capabilites you can get quite a variety of different answers.