It depends on whats better for you. If better means you want to be more horny, then go with proviron at around 50mg daily. If you want rock hard erections, go with cialis or viagra. If you have a g/f use viagra, b/c it kicks in in 45min and lasts a couple hours, so you can plan your sex. Cialis is the single man's drug. It kicks in in about 30min and lasts 36hrs(even up to 48 for some). I find its most effective around 10hrs after the dose. They both give headaches and heartburn, so keep some tums and tylenol or advil around.