I started buying bitcoin at 650 dollars last year. It's been a great ride so far. Now I am trying to party with the alts to make my crypto ride even better. 
Saving bitcoin for long time will benefit more but I think it depends on individual approach to make big profits. One can easily make more profits by through watch of the market and take right decision at the right time while other will wait for long time for price boost. For me its a good practice to watch the market and take appropriate decision and the right time.