This. Kirstie was good. Robin was much better.
I disagree that one was better than the other. Different situations and the characters were written different. Saavik in WoK was written as half-Romulan. Saavik in TSFS was written as full Vulcan.
Alley clearly plays Saavik with some emotions. Curtis played her as a run of the mill, emotionless Vulcan.
Alley also plays her more in-experienced where as Curtis plays her a a seasoned pro.