I don't like the idea of solid mounts because Suzuki engineered the T-case to mount to the frame through rubber bushings for a reason.
But I also don't like tearing the driver's side stock rubber mount all the time.
My solution (which has worked perfectly so far!) has been to run Trail Tough's solid mount on the driver's side, and the OEM rubber mounts on the passenger side. With the 1 solid mount on the "pull" side of the T-case, I no longer have a too-soft mounting system that allows the T-case to move around and damage the frame. But with soft rubber OEM mounts on the passenger side, the t-case can still move around a little bit as Suzuki intended, which absorbs vibrations and prevents frame and t-case damage.