[MpG]

I'd go with the KL fans, personally. Better bearings, and less noise/airflow BS.

Personally, I'm of a mind that barbs+clamps is the most secure option, but the Koolance compressions are well-designed, so take your pick there. But again, make sure the compressions are specced for the proper ID and OD of tubing. And nothing from Koolance comes with barbs, so make sure you order enough for everything.