Please note I solely used these strings on my Höfner 500/7 Verythin shortscale bass (which needs a longscale set, even though it is a shortscale instrument!). However, they absolute shine on an instrument like this and beautifully capture the 60's sound I was looking for. Will change the current d'Addario Chromes flats on my Precision bass with these when the time comes.
The Pyramid flats provide even response, a smooth feel and have the right amount of tension (in line with d'Addario Chromes and far less than LaBella flats).
All in all: good playability and great, 'boxy' tone which really gets the most out of a violin bass or similar hollowbody. Highly recommended.