I have mine for almost a week. 6 shaves done with both plates and both handles.
When receiving it I thought that the build quality was good, nothing spectacular, but definitely above average.
Also, the first shave was rather rough. I don't know why, but feather on blade 4 actually gave me few nicks, which I almost never get. Maybe the blade was bad...
However, and this is a huge however.. Since that first shave, all the other shaves were stellar! I really like the option to dial the gap down when on the neck.
Taiga could potentially be a real RAD killer for me, as the efficiency/smoothness ratio is on point. And I don't get any irritation on my neck (the compromise is of course not so close shave on the neck).
The disadvantages are razor being head heavy - I am using titanium handle which I prefer. Visually I prefer ss handle with smaller knurling pattern, but the weight cut is more important for me.
Also the threading is not smooth when changing gaps on the fly. Since this same threading is smooth when disassembled, it is probably due to spring resisting the rotation.
Another disadvantage (that is of course subjective) is the lack of fun factor. If the Carbon is a sports car, taiga is a full size off-road SUV. It's less fun, but can handle any circumstance.
With all that being said, at this point I hardly imagine using any other razor, that's how good it shaves...