Benjamin Lewin MW writes an indepth and interesting blog..
Two posts in particular caught my attention, a visit to Henry Marionnet in the Loire who grows ungrafted vines and rare old varieties https://winespecific.com/2016/08/30/ungrafted-vines-and-rare-varieties-the-unusual-wines-of-henry-marionnet
and a visit to Champagne maker Bruno Paillard who compared hand riddled versus gyropallet riddled Champagnes and came out in favour of the latter
https://winespecific.com/2014/09/23/champagne-diary-part-3-nostalgia-versus-technology-in-champagne-riddling-versus-gyropalettes/