As a DIY'er you probably want a good quality at the reasonable price. So I recommend you do follow:
- Go to one of the major paint manufacturer stores or a retailer that stocks a range of mainstream brands. Stay away from small,” designer”, hand-made pant brands. They are expensive, often require more coats and may vary from dram to drum in colour and texture.
- Ask them: “Which exterior paint in a premium quality range you can give at the lowest price?”.
I honestly do not see any particular panit brand standing up in quality significantly (do not believe everything they say in TV commercials). So you can get a much better deal if you shop for the quality range, not for a particular brand.