Thanks @Spydro - they do sound great
Which do you prefer the SS or the Delrin?
I guess my preference is a combination of function and appearance. I only run big dual sub ohm coils in them... and they can get hot in a small atty like the O-16. Delrin will not get hot from my long slow lung hits where the metal Syner's might with a hot enough build, and that can translate to lip skin baked on the metal DT's to clean off. Not a big deal, but one more thing to clean. So they end up being more about matchy with the mod I guess. I like slip fit DT's more than standard DT's to get the biggest wide open bore possible without the restriction of thicker DT bases and o-rings.