Original Pixel, part of their 'Google Ambassador' program and have been given all Google accessories since the Pixel release (2 x Pixel devices, Google home, VR).

Previously I've always used HTC or Sony devices, definitely enjoyed the Pixel more than I've liked the current flagships (S7, S8, HTC U11, XZ premium).

Sony, Xperia series... Yep... Lighter, larger, and cheaper... Else, Samsung.

The best Android phone I have had to date was the large LG Flex. Screen pretty much indestructible and drop tested multiple times including once from a 40 foot lift with no more than a quarter inch rubber sleeve on it. Nicely curved to fit comfortably in the rear pocket... Sadly I misplaced mine and quickly grew attached to my current.

asus phones are solid and super cheap

Apple > Android