Destiny 1 is better in a lot of ways, especially in the Crucible. Unfortunately, with a smaller player base, it's harder to get matched up with others. Matchmaking takes forever in PvP, unless you are playing the weekly play list. There's also no Iron Banner there anymore. If you can find people to play with, their strikes are fantastic. Heroic Strikes, in particular. Same goes for Prison of Elders and Archon's Forge. Great events.