what are the best heads being made for la small blocks rite now

Hughes big mouth eddies or the CNC ported ones should work well.

It depends on what cam, compression, intake, cubic inches, carb gearing and trans set-up you have. Big mouths are good for about 600+hp with the right combo. CNC's are one step down but they don't need offset rockers and are good for 500+hp with the right combo.