since my female Caucasian died last week I've been thinking of getting a female GSD but my fear is that it won't be as active as I want because that's how my female Caucasian acted. Please advice

An average GSD is much more intelligent than an average Caucasian, but obviously not as aggressive as a true Caucasian. Having had a Caucasian which ranks more than a GSD in aggression.... You will find an easy trainable dog in an average GSD.

it all depends the treatment u give it if u treat it in an aggressive way she will be aggressive if u treat it in a cool and loving way it may be cool or aggressive and if u treat it in an over pampered way she will be over protective over the person Who over pampered her with love