Except the S8+ is more of a big phone than a phablet.
Finally approaching the end of my Lumia 950 contract (the phone basically gave up about six months ago, and is currently experiencing constant reboots for no apparent reason).
S8+ is a contender, although the elongated shape seems odd to me.
Huawei is also in with a shout - we sell the big Huawei infrastructure kit here, so occasionally can scrounge consumer stuff. My boss has the previous Mate 10 - it's a monster thing, no mistake, but I'm rather taken with it.