If you are looking for an affordable high quality brush, this is the 1526Y. Made from Harbin-Kolinsky hair, this brush still offers enought quality for professional work but at cheaper price.
Less durable than Maestro Series 10, but with very similar characteristics: firmness, tip and length. If you don´t want to spend too much in a brush or you don´t want to worry about it care, 1526Y is perfect for you. They are also a good choice for an "always new" brush for your miniatures.
David "Basilisk" recommends a size 2 as standar size, which is similar to a W&N Series 7 Size 1.
Check the size chart for more information.