I finally got mine at Friday. Didnt have any time to test this back then but now as i have couple of hours with the FCS, i can put here some thoughts..
Build quality seems very impressive and durable, far less "cheaper looking" than my previous T-Flight. It didnt bother me with T-Flight though.
Besizes, im using Vive so i dont even see the thing.

The plus size is also that i dont see that quite annoying led at the base of the joystick. I dont know if that can be turned off from software somewhere, but i didnt download any software so i havent a clue.
Actually, i just plugged the FCS to usb ports, selected the FCS preset from control presets and began fiddling with the bindings, didnt use any software at all and works like a charm.
It might be that i want to adjust the joystick curves at some point but as im en route to Beagle Point, the stock curves serves me just fine.
Throttle and joystick feels sturdy and not plasticy at all.
Handling. The joystick is a bit too big for my hands, as i have relatively small hands and with T-Flight i felt at home. This might be something to get used to with time, but the first impression was that the joystick is a bit too thick.
Joystick movement is really nice and smooth, didnt touch any tensions yet and out of the box it feels quite nice. I had 1400hrs in T-Flight and had the tension screw maxed and i kind of got used to it like that, but i think i like this better as its a bit more loose.
Joystick has much more trajectory than T-Flight and it makes it much more precise most likely, but im not quite sure do i like the bigger trajectory as it requires more hand movement. But again, im guessing its something you will get used to with time.
Throttle feels smooth and now after 2 hours in, i can say that i dont need the centering notches at all. Im very at home with the stock binding with the throttle curve beginning from the "bottom" and reverse is with the analog hat.
Buttons. Finally, i can let got my keyboard. Except in galaxy map, thats something i just cant use with nothing else but keyb+mouse.

Maybe i will learn to do it with FCS some day..
But, theres really decent amount of buttons and now my main problem is, how to bind this thing..

Considering i use Vive, most of the throttle hats and buttons are easily recognizable just by touching and without looking, i think this very important for VR users.
Joystick base buttons, yes those controversial ones.. The left side buttons im ok with, i have some rarely used functions to bind for them, but those buttons on the right... bad Thrustmaster, BAD.
All and all, for this price, you will get a really good HOTAS. This is a clear step up from the T-Flight and i wouldnt call FCS a "cheap" in any way.