Schubert- Impromptu op. 90 no. 2 E flat -major

[10Fingers]

Hi,

I'm playing this Schubert Impromptu at the  moment, but I don't exactly know in which tempo I should play it. I heard it in very different tempi, ranging from 160 ( a quarter note) up to 190. My technique is all right, it's no prolem to play it fast, but how would it sound best?

Thanks.