Both are good stations but it’s up to you but you like because for Manali from Delhi you need a minimum of four to five days and to visit Rishikesh two days are enough…I would suggest going for either Manali ( Skiing, Paragliding, Rafting ) or Macleodganj ( Paragliding, Triund trek ). Rishikesh is good for a short-duration trip. Rishikesh is famous for yoga and adventures like rafting and bungee jumping, but rafting is closed this season.