The reason that I finally gave up on Gunze Hobby colors was the fact that any decal setting/solvent /solution or just plain water usually ruined the paint surface.
Drying time was not a factor. Every time I applied a decal, then used a cloth to press it down or mop up the excess water or applied any of the several decal solvents or setting brands I use, the paint started to soften.
If I found a paint flaw that needed light sanding and attempted to use fine grit wet-or-dry it would turn to goop and ruin the surface.
I have a lot of finished models in my display case, and over time they sometimes need some cleaning/dusting. I had no confidence that light soapy water or even just soap suds would not attack the finish.
As a result of all of the above I made the switch to Gunze lacquers and have never looked back. Have no reason at all to regret the move. All of the good qualities of the Hobby colors with none of the disadvantages.
Norm