I'm not allowed to talk about my Nexus 6 anymore. Every time I do my wife thinks I'm having an affair.
From a performance, feature and spec standpoint, usually after a year or so i start looking at the next device. So, i started looking and i still can't find one that makes me want to ditch last year's model. I see zero lag, great battery life, ample memory and a glorious display.
As to it's size. Um ... well ... yeah, it's big. When i first held it, it felt gargantuan. I used to chuckle at Galaxy Note owners. Can't do that anymore.
And to add insult to injury, the design of the phone and the materials make it a little slick to hold. this was the first phone I ever felt the need for a case ... which, of course, makes it bigger.
That said, I am not only used to the size now, i don't think i'd consider going smaller now.
I did have to buy a jumbo car dock but other than that it's been very little adjustment to accommodate the size. It's very pocketable, although my days of slim fit jeans are long past, you certainly don't have to put a new wardrobe of cargo pants on your Christmas list.