Basically I'm looking for a 14mm inline about 16 inches tall. willing to spend $300 or so. which brands are nice and good quality and which percs are the best for massive diffusion with little drag?
A little smaller than you're looking for, but a clear model would also be lower than your $300 price point. Ben Wilson inline tube with the triple doughnut... http://stores.theglass-vault.com/-strse-Ben-Wilson/Categories.bok "@qu@l@btechnologies".com/scientific-glass/b-wilson-glass/b-wilson-glass-slyme-black-inline-tube-2.html
"Aqua labs tech." Nice glass cheap all kinds of artist look around I found a nice g on g beaker bottom for under 150$ with shipping.