If you look at enough cheapo/handmade circuit boards you'll notice they often look like the bottom one. Cramped, untidy, or otherwise odd trace layout, poor par

If you look at enough cheapo/handmade circuit boards you'll notice they often look like the bottom one. Cramped, untidy, or otherwise odd trace layout, poor part placement, poor soldering. The top one - although looking less space efficient because there's more going on - is layed out better. The design just flows in a way amateur designs don't.