1) As it known the most common and most often used due to its beauty is the harmonic chord transition 5M7->1M. It is a relaxing resolution. Ii is strictly diatonic transition.
2) The 2nd best in beauty chord transition and also widely used both in classical and fol music is the melodic chord transition to the major relative chord. Thus the 1M->6M7 (or 4M->2M7, or 5M->3M7).It is not directly a diatonic transition but in the general context of chromatic diatonic transitions. It is a tired resolution.
3) The third best chord transition is the melodic chord transition to the lower minor relative chord, e.g.
1M->6m (or 4M->2m or 5M->3m) . It is a easy slip to sadness
It is directly a diatonic transition.
4) The 4th best chord transition is the chromatic chord transition e.g. 1M->2m
