Up north 50/50, anyone down south can get away with less. Water releases heat better than
antifreeze so use enough to alter boil/freeze points and no more. Also water pump lubricant is a good add on to prevent seal failure on the pump.
I've never had much faith in the "wetter" stuff, if your boiling over you need to find out what's wrong with your system, "defective water" is rarely the cause. Distilled or filtered water will reduce calcium deposits which are death to most radiators.
Make sure your anti-freeze is aluminum safe as well (most commercial ones are).