Does hight matter when choosing an aneros massager?

I know that people have varying success with different kinds of models because of their prostate being located a bit higher or lower then usual.
So I was thinking since I am only 5’4 feet tall that my prostate may be located a bit lower the average.
I am a broke college student and can’t really afford to try different models.
Should I get the Aneros Jr. Since its a bit shorter than the other models?
Or am I overthinking?