Since the moment I started in this hobby, I knew clearly that MSD was my top limit in size because I find SD size to overwhelmingly huge. In that time, I also was afraid of dolls smaller than Yo-SDs because I found them too fragile or whatever. Nowadays, 20-28cm range (tiny to Yo-SD) seems the perfect size for me. Very light and easy to carry anywhere. Plus they don't use much space in the cabinet so it's a win-win situation.