You can do either and be fine. Some decant and some don't. I don't just because I don't feel like cold crashing it and waiting. Unless you are making a 2+ L starter there is no real need to decant.
Up Next: Blonde Ale, German Pils
Primary: Pumpkin Spice Latte Stout
Kegged: Galaxy Dry Hopped Fort Point clone, Blonde Ale
Bottled: S'mores Stout, Blonde Ale