refrigeration apprentice

[jack of all]

hi all
I am an apprentice doing alot of service for ac thought this would be a good place to join for wheb i really get stuck or cant get advice elsewhere looking forward to gaining alot of knowledge here.
First off id like to as
In your own opinon what is your favored brand for ac
Favourites for splits
multi
ducted
Lookong forward to feedback
:DPlease check other post for help with an lg