Are you using Testors rattle cans?
What are you painting? Planes? Cars?
If you are painting aircraft there is little choice except Testors or another model company's paints as the other spray cans in stores are just your basic colors. If you are painting car models you could buy any of the spray cans from any store and get the same results as the Testors paints for less money and a bigger can.
“Wisdom is the right use of knowledge. To know is not
to be wise. Many men know a great deal, and are all the greater fools
for it. There is no fool so great a fool as a knowing fool. But to know
how to use knowledge is to have wisdom. " Charles Spurgeon