anything you take will shut down the function of your HPTA meaning your body will not be producing testosterone throughout this perioed...now if you were to take DBOL only your hpta is going to be shut down so you wont have ANY test in your system and the DBOL will convert into estrogen soooo lets seeee no test at all add in large amounts of estrogen and we get some emotional sides accomponied with libido issues not to mention the large amount of water weight brought on by the DBOL and most of the gains from DBOL will be lost shortly after ending your cycle.......now test only will shut down your HPTA but you will still be administering test so youll still have plent of test in your system shouldnt see any problems with libido and based on the dose you will be administering water weight shouldnt be an issue either witch in turn will result in more retainable gains....go with test only clearly its a better choice