I have a Chugger pump with the stainless pump head. I really like it. As I understand, the chugger has a lower flow rate than the March pump but that hasn't caused any issues for me.
I use stainless camlock fittings. They are durable and full port with no obstructions in the liquid line. The main downfall being they get hot. Thus, you need to be conscious of that when you want to remove one. As a side note, I use silicone tubing with the camlock fittings. It is rather pricey but can tolerate a wide range of temperatures and remains flexible when cold.
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