as has been mentioned much depends upon what was being used as a trainer, how well individual is progressing and if they have some assistance.the first time or two on a (to them) much faster plane could be a real nerve racker. the 4* is some what unusual to advance to as a #2 but many do it successfuly . outstanding design. the ugly stick type has much going for it and is a safe bet as is the Sig Kavalier.