Oil and Cold Wax is my medium of choice. I love the finished product because there is no glare as the medium dries to a matte finish. So no matter where you hang it, you will not get glare. I rarely use brushes, and the medium is so forgiving and adaptive. You can scratch into it, mix in collage, reveal underlayers, and work with pencil, oil pastel, oil sharpies, and other media when working in cold wax and oil. There are really no ends to the medium.
I do work in other mediums such as, Encaustic, Acrylic, Mixed Medium and Upcycled sculptures.