Which way better for front sound stage?

Any name brand 6.5" mid should be able to cross over easily to a sub at 80Hz, which means it should also be providing music below 50Hz.  If you haven't done this, I suggest removing the mids and remounting them to a baffle.  You can make the baffle from a variety of materials, but it has to be solid, unyielding and be sealed completely.  The door panels have to be damped, both the outer skin and the panel, and all openings sealed as well as possible.  Maybe that is what is needed to bring out the punch that is missing. Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

for the best sound stage you want to be able to cross your midbass and your sub bass as low as possible. this allows you to have as much bass up front with you as possible. 50hz would be prime. also, 3ways are a great choice. I run the focal polyglass 3 way components and love them. excellent for soundstage. the trick is finding the best way to install them in your vehicle. expect to spend many hours testing every possible location before you actually install them. great soundstages dont come easy.