Let's see. Of course your feelings for the OW are strong. Right now, she is everything your W is not. She listens, she cares, she treats you like you want your W to treat you. You see a future with this woman that you do not see with your W. I am not going to say your feelings are bogus, but right now, because of the problems in your sitch, you could have on blinders.
I would suggest you take a step back from the OW, have a sit down with your W, and figure some things out before you decide on a D. You have not given any history as to what your problems may be with your W other than personality differences. Are you saying you and the OW mesh perfectly? If you say yes, then you do have on blinders. If you want to get pass the differences you have with your W, you can. You just have to want to.