I liked it the best of the three (the others being Idiot and C&P), maybe because it more closely approximated my idea of a story, or made the characters clearer - even though it was apparent that the only reason for the story was to have a framework to hang the long speeches about morality and religion. Still, frustrating for me that after all that length and complexity, nothing is really resolved.
But that's it! No more, I hope. His books are so peopled with characters always giving themselves over to hysterics and histrionics. Enough! Interestingly, I gather that much of Dostoyevsky's life may have been like that - his father was such a dreadful man that he was murdered by his serfs - so maybe he was indeed writing what he knew.
My particular edition declares him to be the greatest novelist of all time, and this the greatest novel. Do you agree? I sure don't.