You will want to use the highest quality exterior home paint your budget will allow for your project -- not only because it will look the nicest, but also because it will save you money in the long term by offering better coverage and durability. Better coverage means fewer coats and fewer work hours for your painter; better durability means that you won't have to spend money to paint the exterior of your home again in just a few years. How do you know how much paint you're paying for? Here's some helpful math:
Climate is another factor to consider. Sunlight, wind, rain and salty weather can all wear out exterior paint. Oil-based paint is durable against wind, rain and temperature changes, but sunlight tends to degrade it. Alkyd paint chalks and sheds very thin layers when it begins to wear. Latex paint is the more durable option for very sun-drenched and relatively dry climate areas. Latex paint with high vinyl content should be avoided, however. Acrylic resin is by far the more durable binder for outdoor latex paint.
Deciding which paint to use has gotten much easier now that acrylic latexes have pushed oil-based paints almost to extinction. The acrylics offer superior performance (they don't harden with age, the way oils do, so they move and breathe without blistering), they don't mildew as readily, and they emit fewer VOCs, so they comply with new air-quality regulations. They also work over both oil- and water-based primers.
David and his painting team were able to start working even sooner than they had told us originally and they finished much faster than we expected. This was so helpful to us since we were able to start moving things into our new home once they completed their work. We are so happy with the paint colors we chose; David made it easy for us by painting 3 different samples on the outside of the house to help us look at them as the light changed on the house for different times of day. We loved that he offered this to us since we were having trouble picking between 3 different shades of green.