I'd recommend LSD at least for me as it is less emotionally taxing and has more mental clarity than mushrooms. Though it will depend a lot of the strength of both drugs (how much LSD is on the blotter/pill and what strain the mushrooms are and how optimum their growing conditions were). You may get some shit blotter and amazing mushrooms or the other way around. But in general LSD has always been a smoother trip than mushrooms, which kind of throw you for a mental loop at random times more than LSD. At least for me...