I watched both already but I’ll pick Ashes of Love 100% over 10 miles of peach blossoms. They both have epic love stories BUT ashes was more heavy and angsty than 10 miles which made my heart literally still ache whenever I hear the OST. The first half is lighthearted and funny with lots of chemistry and the second part is heavy which will make you cry but I love love it so much❤️❤️! It has happy ending so don’t worry! Hope this helps:))
10 miles has an epic storyline too but it wasn’t as heartbreaking (I’m not a fan of heartbreaks but it just gets to me more ya know?) the OST in here are superb like ashes and the leads have great chemistry but with lots of trials.