Quote:
Originally Posted by michael_in_nc
Cheaper to buy the mp20's and upgrade to mp40's? I hadn't thought of that. I might look at that if I need more flow down the line. The controller must be the only difference between the mp20 & mp40...
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Yep if you can find used Mp20s for a good price you can save a bunch. The upgrade just switches out the controllers and the power supply. Takes 2 mins 
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