Harbeth shl5 upgrade over spendor s8e?

Hi,
I'm considering upgrading my system with harbeth shl5 speakers. I dont have an opportunity to audition them so would love feedback from those of you who had the chance the compare it with my current speakers, the spendor s8e.
First off, I love my spenders. Great for jazz, render vocals. They exhibit true musicality. But I recently upgraded my system with an lfd int amp - superb- and heard that it pairs really well with the harbeths. My listening mix is mostly classical ( mostly chamber music, cello,...), jazz, blues, world music, and only a bit of pop, rock. My current system consists of nas, sonos, w4s dac1 with supercaps, lfd ncse, spendor s8e.

Would the harbeth shl5 be an improvement or not?

Thanks!