2. No, both are more likely to give you more sides and be problematic then the test enanthate or cypionate. Partially because of the increased injections but largely due to both esters giving you a natural ramp up and ramp down. It is true that you can abort a short ester cycle easier then a medium length cycle but the general consensus is that it doesn’t outweigh the other benefits
3. There is not significant difference. In fact for year people believed that the cypionate was superior.
4. That form of administration tends to be better suited to longer cycles and mass building cycle but there is no reason that you can not interchange them. While testosterone does behave differently (somewhat) with the ester used there is a lot of truth the saying “test is test”. In truth you can use any testosterone to get you where you want to be.