In Reply To #4
There's Fighter, Magician, Thief and Luck iirc. (Luck and Thief might be the same one though)
I like them all, but I also didn't like parts of all of them.
Innocent Devil was a cool Idea, but those innocent devils could kill Isaac and the main char 20 times over take a piss and kill them 20 more times again. I mean, my ID could literally kill Dracula with a fart. Its cool taht its powerful but its just not right, and the Ai sucked.
Cards were cool, a pain in the butt to find though. Half of the spells were kind of useless too.
AoS, I liked but you're limited, and that kind of sucked, though you'd be overpowering if you could freely use all of them in quick order.
My favorite though, is SotN. You have all the spells, you just have to know how to do it. I use majority of the spells, however, the spells are rather .... pathetic with the exception of Soul Steal and Tetra Spirit.
It wouldve been nice if you could level up the spells, too.