My favorite still the first one, but prime 3 is an pretty good game with excelent gameplay, OST and history. Its far better than the second one IMO.

The way the game makes you feel as a hunter in this game is amazing you go in diferent planets and trully use samus ship, even as a exploration tool in land. If this game had released in modern days and with today technology it would be one of the best games of all time.