Hi! I use mirrorless and I am extremely content! At the moment Oly OMD 10 with 25 1.8 prime (50 mm equivalent) and Pana 35-100 2.8 (70-200 mm equivalent). Soon getting Pana GX8 and Pana 12-35 2.8 (24-70 equivalent). Pana and Oly have compatible lenses, so there are lots of lenses of very good quality to choose between. If you want high-end mirrorless, look for Sony, Fujifilm, Olympus or Panasonic.