I like credit spreads because you can make money if the stock doesn't move or it goes your way or even sometimes when it moves against you. A debt spread needs the stock to move a certain direction.
The downside to a credit spread is capping your gain based on the premium received. In other words credit spreads have a higher probability of profit but they don't have as much reward as a debit spread. Its a trade off.
Ummm . . . no? Disregarding the wider bid/ask spread on the typical debit spread, it is identical to the credit spread with the same strike prices & expiry. One downside to credit spreads is the fact that the short leg will go ITM before the long leg, which potentially exposes the seller to assignment w/o an ITM long option to cover.
There is no fundamental difference between the 2 spreads if pricing is equivalent (other than the risk mentioned above). By "equivalent pricing" I mean the debt is equal to the spread minus the credit.
