Green Leaf Co2 Systems

[RyanV]

I found this website today and they seem to have great systems. Does anyone own any of there CO2 equipment? I am also torn between getting the choice regulator or the primo regulator. The only difference I can tell between the two is the needle valve is better on the primo, but is also $35 more. What do you guys recommend? I will be using this on a 20 gallon tank.

Here the links:
Choice regulator- http/greenleafaquariums.com/co2-regulators/choice-co2-regulator.html
Primo regulator- http/greenleafaquariums.com/co2-regulators/primo-co2-regulator.html