HIDESAKU: I've had my T992 for about a year (since new). I initially found the springing too stiff, although responsive (likely due to the careful design to use long springs). Just recently, I went through and did an annual PM on the horn and lightened the springs. This has improved playability greatly and decreased playing fatigue.
On the lacquer however, I am not too pleased. After only one year there is much wear on the touches, and the horn is far too easy to scratch. I use a plastic clip straphook and that has scratched the horn more than I have ever seen in so short a time. There are also sags, runs and waviness in several of the large areas. Same is true for my older S990 and A990. My B991 (also relatively new does seem to be somewhat better in appearance, but the lacquer is showing signs of early wear.
Truth is, though...I don't care that much! Love the horn.
I also have as backups A880 and T880; they both look terrible for horns of their age. The T880 has corrosion under the remaining lacquer in a spotty appearance and the A880 has almost no lacquer remaining. Both are repair and dent-free.
As background, because of stress injuries I replaced all of my Keilwerth and King horns with Yanagisawa as the best-sounding horn I could find with modern ergonomics. My Keilwerths had very rugged lacquer.