So I may as well wade in here, as I am known as a brush painter only and my take on the brands.
1) Humbrol (enamels)
Currently, humbrols are a mixed bag quality wise when it comes to brush-ability, they are having in my opinion huge quality issues which means some pots will arrive and the paint is so thick, you can invert the can once opened and the paint does not drip! It thins poorly with 3rd party thinners but fairly well with humbrol own brand. Older Humbrols are still my go to paint and with the right brush and patience will go down without brush marks.
Again they have issues with newer batches, not quite as thick but really do not seem to thin well unless thinking with a mix of iso pro acohol and vms thinners. Older batches cover well with out masses of fuss.
2) Tamyia (Acrylics)
I find with these they need thinning with X-20 thinners when brushing else they dry very quickly. A few drops of VMS Slow-mo makes them easy enough to work with. Another factor with these is room temperature anything over about 22 room temp and unless you thin excessively then they are hard work.
3) Vallejo (Acrylics)
Used a few of these and have never really had to do anything with them to brush with. They just work.
4) Hataka (Acrylic)
I've used the "brush" and "airbrush" ones of these and find again they just work with brush, minimal fuss but to my mind expensive.
5) Revell (Both)
Revell enamels, I find are quick thick and need thinning down with own brand thinners to get a nice consistent smooth finish. They don't have the quite the same issues with 3rd party thinners, they react well to humbrol thinners, but poorly to VMS thinners.
I quite like them, react well to VMS thinners and go on nice and smooth without too much fuss.
25. June at 17:50:59