The main point of taking blends imo is that they are a great stepping stone. You take for example a tren blend with short, medium, and long esters, so you get the effects right away and then you are also building it up in your body with the long esters so after a couple of weeks, if you continue to take the mix you are getting a higher concentration in your system. Also, at this point you can switch over to a long ester and not have to do this eod injections which can be a pain in the ass (literally).
I gtg though, I will add more later if I get a chance.