You should see what your local HVAC guys use. Mitsubishi was top dog for a long time Fujitsu close. Diakin has very good reviews and specs highest efficiency, cooling and tied for best unit with Mitsu.
I have a bro-n-law works parts for a HVAC company he recommends Diakin lowest service calls. My recent bid for Diakin 2 ton one head unit was like $2500 installed.
All that said don't think you can go to wrong with the top 4 Diakin, Mitsu, LG, Fuji.
Again see what is local to you for service in the future if needed.