I am currently contemplating setting up a system that uses either 1/2" OD, 0.37" ID, 16 gauge stainless tubing or 3/4" OD, 0.62" ID, 16 gauge stainless tubing with tri-clover fittings throughout. I dont suppose there is really too much difference between the two but I thought that I would throw it out there in case there were any opinions either way.