MBPro with SSD/Retina - I've also got used to a single screen and gestures, because I'm rarely at my own desk when I'm using it
iPad for entertainment and note-taking (Evernote) and Nexus 5 phone,
which I'm pretty happy with - big enough without being silly.
Run Win10 and Ubuntu15.04 on VMs; the 16GB RAM helps there. Jumped from Win7 to Win10, seems OK so far.
You've possibly guessed I'm NOT a gamer …