Hello! We start in Gdansk, end in Krakow, and are having a hard time deciding between Wroclaw or Torun in the middle. Which do you like best/why? Which is more 'charming'? Which less 'touristy'? Any input at all would be appreciated- thanks!

Wroclaw is very out of your way by German / Czech border ... Torun is on your way from Gdansk to Krakow ... Wroclaw old square is nice BUT unless you are planning to see much much more in area of Wroclaw (since there is not too much in Wroclaw) then I would not waste so much time and detour like that ... Instead stop over in Malbork Castle (right outside of Gdansk) between Gdansk and Torun - then Torun ... which has bit more then Wroclaw (by itself) ...