Thanks for guidance.
Actually, I've chosen Donic Z2. It looked momentarily more affordable.
Though not that fast comparatively, it allows me to control well. Will report soon after more trials.
You said that the elasticity of sponges in foreign brands mostly in common declines with time, right? Why?
[ 本帖最後由 friendlybrother 於 2018-5-22 15:29 編輯 ]
