First post for me, you all are champs! Been on PCa active surveillance for almost 4 years and recent MRI show a discrete nodule. MRI guided biopsy on July 10th, so thinking ahead needless to say. Almost 60 yrs young and very fit in all respects. For some time have been using 20-25 mg Sildenafil and works very well. Concerned if I need treatment, I might get more severe ED and been researching injections/implants. Seems for the majority (if not vast majority) guys and couples are quite satisfied with both - obviously gives me hope if pills don't work anymore. . . @jasonfarmer (and others) you're experience and insights have been great, much appreciated. I find it interesting you're still using injections even though you are having natural erections. Also, to @jasonfarner and the Board, does stimulation matter at all in getting and keeping the erection with Trimix. On the pill, it's all about the stimulation for me/us, but with that, erections are very strong. Seems to me with Trimix it's the drug gives you the erection stimulation or not then it's about having the experience while its active and stimulation is not a big factor, though not sure. Would appreciate any helpful feedback, with much thanks and blessings to all!!!