Best / Cheapest Heads for 5.9 Magnum

What are your intended purposes. You wanna go fast? You want daily driver,m.p.g?. You want a smooth idle,grumpy idle. Car ,gears,trans/converter(?), Or,just get it running?...
Street only. Want to make some power but still have a reliable engine. A step up from my built 318. Picked up the block with no heads, intake, or oil pan for $50. Car is 72 swinger, 904 trans with stock converter and 3.23 sure-grip gears. Thought it would make a cool winter project. Will include a cam change.