Sold a set a few months ago, they seemed to offer an agreeable difference on backroads - not harsh like coilovers but still firm. JDM shocks and springs seem to be the way forward.
I originally had potenza adjustable shocks on mine.. They were good shocks, gave a nice and firm ride.
i couldnt find replacements anywhere tho when one leaked (general wear and tear) and i was told they were rare and hard to come by.
I had Tokico Potenza springs and dampers on my Glanza when I got it. Handled great with them, quite firm Unfortunately the back ones had leaked so i replaced all of them. Still got the springs on tho.