Phone: Apple (I tried Android a few years ago and it was a terrible experience)
Tablet: Apple, but if I get another tablet it's probably going to be an Android, as iPads are terribly overpriced.
PC: Windows PC, and a Mac Mini for random little things
Laptop: Microsoft Surface Pro, Lenovo Ultrabook (forget the model), and a Dell Latitude 3500
The only companies I have loyalty to our companies I use in enterprise environments. I only use Dell Servers/Workstations/Laptops, I will only buy Nimble Storage, and I only deploy Microsoft 365 and Azure.