I love the Star for its durability and grip. I especially like my Star San Marino Rocs because they are way more stable than the Rocs I used to throw two years ago (Champ Sanny and KC Pro) and almost vowed never to throw Rocs again. The two I have, a 176g and 180g fly perfectly and consistently.
However, if you are looking for something on the understable side, the Star San Marino will probably not be the one for you. I like throwing them flat or with a tad of hyzer and watching them fade onto target (200-310ft). I also use them on high sweeping anhyzer lines knowing they will fight to land flat (180-270ft). A better choice would be a Star Mako or if you are willing to order online a Star Ontario Roc would be a good choice. The Ontario is noticeably more understable and turns more easily and on a flatter plane. All my midrange shots are covered by my Star SM Roc, Star Mako, and Star On Roc.