The Tamiya paint is even nicer than the Testors. By the way, you can use mineral spirits as thinner. That's all the expensive thinner they sell is, anyway.
It's truly great paint. The coverage is amazing. You can BRUSH it on with zero brush strokes showing. I think brushing may actually be more economical with the paint. More on the model, less in the air. Dunno. But...the colors are dead nuts scale. The flatness is perfect. The paint really looks just RIGHT.
I have not played much with their gloss paints, I do not think they are the right choice for that.
The testors SPRAY cans are incredibly expensive to use, though. I would stay away.
Go price out a couple of spray bombs of lusterkote or perfect or whatever. You can easily spend $50 on regular model airplane paint on a single project. If you stock up on dope at every swap meet like I do, and take the time to mix your own colors, dope can be economical, but if you are paying retail, it's expensive nowadays...