being forced to choose one... I picked Sloth
It's very slighy stronger in me than lust, but really I think the strongest is pride...
really though, I've never thought of Pride as a sin... (like someone said before me the kind where I think I'm good, not the kind where I think others are bad)
see, If I were ranking my sins, then it'd go in order of which one I thought was the biggest problem/potential problem in my life, and I don't see my pride as causing me any harm that I'm not willing to deal with. (for instance, I don't apologize for hardly anything, but that's just the way I am; I'd rather deal with the consequences of hurting other people's feelings ect. than apologize for my oppinion or whatever)