I've already decided to go with SS instead of copper, so that's not the question this time. My question is I was going to go with 50' 1/2" from http://www.midwestsupplies.com/stain...ngs-50-ft.html
Unfortunately they are out until March, and I'm being impatient. I found 1 3/8" 50' from http://www.nybrewsupply.com/products...-immersion.php
I'm going to be doing 5gal big beers and 10gal normal beers in a 15gal keg, anyone with experience have an opinion on how the 1/8" diameter difference will impact my cooling time?