If you're not looking for these to collect but to play I'd really reccomend getting Legends 2 over 1. 1's mechanics are very clunky and its story is less polished, while 2's are much more refined, 2 also has greater enemy, mission and boss variety. If you're going to play 2 after all, use control style d which is Analog controller only, the game plays exactly as Halo 2 with control style d, you'll hardly have to use the fidgety lock on system outside of the final boss fight.