Acrylics & Oils
I used acrylics a great deal in my early career as a painter. I am now re-discovering the media, and it seems to me the paint quality has improved substantially.
I am using acrylics because they dry very quickly, and it suits my approach to landscape painting on the spot. I like the fact that you can layer up the paint in one session. This approach translates well for use with intuitive abstract painting. I can experiment with the manipulation of the paint surface and build up texture and colour in one session.
I bought a 10 metre roll of Arches oil painting paper, which behaves a bit like ordinary watercolour paper, but with turps or white spirit for dilution instead of water. The absorbency of the paper makes on the spot oil painting easy and very satisfying.