Thank you for answers, Ian and Philippe - that's good news for me. If the da Vinci 5073 is in any way comparable to the Richeson magic then there is no need for me to search further - the 5073 is what I am using now - I need another brush so I thought I might take something supposedly better. Now I can stick to the same - or maybe try the 5080, might work better for non-textured papers like Cot320 (or Arches Aquarelle Satin of which I bought two sheets last week to try out..