In that case, I'd definitely go with the var. It won't make your joints( shoulder in particular) hurt, and if you can afford even more of it, you might can add more or lengthen the cycle. If your shoulder is just bursitis, I've had that alot... it's just inflammation of the joint, normally from overtraining. Rest the shoulder, ice it, but if it hurts every week, just go to the doc. No sense getting halfway through a nice cycle and messing up a rotator cuff or something. But yes, given the choices and your shoulder issue, I'd go with var.