I'm a big fan of the Aqueous Hobby Color range from Mr Hobby. I've used other colors before and found that this paint spreads easily, and has a nice vibrant color. There is a special thinner that has been released for the Aqueous range, but in my experience this isn't needed. The paints, if you decide to water them down at all, need only a few drops of tap water.
I enjoyed working with this color, but I found that it needs more coats than others to create a nice strong color. Largely this is because lighter colors always need more coats (or a lighter undercoat) but also I think that the yellow was even more watered down than some of the other colors I've used. As long as you're aware of that I have no problem recommending this paint and others in this range.
