Dear Geert, I am 43 year old young-onset (diagnosed in '84) "parkie", who was also offered the choice of electro-stimulation and pallidotomy. I opted for pallidotomy because it is simpler and more proven. Electro-stimulation involves post-op adjustments and interventions (to place wire & stimulator in proper place) and I"m a low-maintenance kind of guy. I have seen a person who is very happy with electro-stimulator (done on second side). By the way, my surgery was a complete success. I had a right pallidotomy and had great benefit on my left side, and some benefit on my right.. My meds are about 1/3 lower than before. Life is really beautiful, even if I did gain about 8 kg and am now a little TOO fat. Best of luck with your surgery. It takes some guts to go ahead, but you seem pretty ready. Regards, William Berman