I had 2 clear acrylic ones. The Cisco LR 306 1.5 cracked both of them. I do run them very hot. The newer delrin ones that cisco has are around 1/4" longer than the standard ones, and more of a tapered mouth like the 510. I resisted change, but like them much better now. The Cannons are way to long for me and ruin the taste. IMO
slickplaid wrote:I heard that the clear acrylic ones break easier than the black (delrin) ones. Can anyone confirm or deny this?