From you PTW list :
My Sassy Girl is a good film, you should give a shot: funny and sweet.
Tada, Kimi Wo Aishiteru and A Millionaire's First Love are good too if you're looking for a sad heartwarming films.
Chilling Romance is a good horror-romantic film, i recommend it.
Kimi ni Todoke have an innocent love story, it's good too.
Other from your PTW list, i would recommend Duelist it's a great film, martial arts and great lead actors, simply a piece of art.