Picked up a used X-T1 this week to try one out and determine if I wanted to stay with Fuji, and I have to say I'm pretty impressed.
Fuji is obviously learning from previous releases (at least in *most* areas). The X-T1 is pretty much a realization of what I've been waiting for from Fuji since my first forays with the X100 and X-E1. It's not perfect, but it's fantastic, and I haven't felt this immediately comfortable with a camera in a while.
The Good:
* Body design is fantastic for me, feels just right in the hand. Love the weight, shape, and the control placement (though it'll take a little getting used to the different layout).
* Focus speed is finally decent, even with the slow 35mm lens. Just about on par with the A7 and 55mm FE lens now.
* EVF is nice & big and looks great, as you'd expect from the reviews. Dual view is pretty clever, though I'm honestly not sure yet if it's the greatest thing ever or something I'll never actually end up using.
* Focus peaking is implemented much better and eminently usable now for adapted lenses
* Bless you Fuji for continuing to use the same battery model
The Bad:
* The 4-way controller - ugh. I'm getting used to it, but it's a pretty awful tactile experience compared to the X-E1. At least until I started adjusting I had a lot of missed button presses and difficulty getting to menu items on the first attempt.
* Focus speed still lags in low light some, and with the 35mm it can vary from quick enough for most uses to an incredibly slow rack in, rack out hunting expedition. Not 100% "there" yet but clearly much improved from the X-E1!
* The usual Fuji firmware niggles: why can't I move or resize the focus point when I have face detection on? Why can't I reassign the record button, or assign any function to various buttons? Why are the MF aids only enabled if you've explicitly switched the camera to manual focus mode? That sort of stuff.
* I wish the front and rear command dials could be used to override the top dial settings. Yes, I realize that defeats the purpose of the mechanical dials to some extent but they could have added a setting for override with the control wheels. Twin dials at your fingertips are considerably less useful when you can't truly control the camera settings from them, IMO.
EDIT: Oh, and I forgot one tiny negative so far - the drive mode dial underneath the ISO wheel is too easy to accidentally move. I'm sure I'll get used to it but twice already I've bumped it into CH mode while attempting to adjust the ISO setting.