It depends on what you care more about
: bigger plants or being able to control the soil environment.
In the ground you get bigger plants, but you risk ground-dwelling parasites fucking up your crop. If you go with ground, keep a close eye on your plants around the base and on the bottom of the lower fan-leaves.
If you decide on pots, you can get good size plants with big pots (I use 15 gal. pots and get up to 1.5 oz a plant). Also, you have the option to move your plants inside when temperature starts dropping around harvest time. I lost half my plants a couple years ago to frost bight.
Hope this was useful!
Keep Burnin'