Do i probably have msa rather than parkinson's because of poor balance and having a positive babinski's reflex sign in my left foot?

Challenging: You describe neuropathy, perhaps ataxia, and parkinson's. Would actually wonder if you possess olivo-ponto-cerebellar degeneration, or some parkinson's plus syndrome. Msa can be considered if you show autonomic dysfntn with urinary incontinence, postural hypotension, (helpful is association with sleep apnea, stridor and anterocollis). This is a job for an experienced movement disorder doc.