Enanthate, Acetate, Cypionate are all different types of Esters. Each ester type is absorbed into your bloodstream at different speeds and will stay in your system at different rates. Acetate is absorbed within hours but it also leaves your system (half life) much faster so you will have to administer daily or EOD. Test, any ester, will give you a higher sex drive. Are you doing a Test only cylce? I like Enanthate. There are also test mixes such as Sustanon.