the 5/8 stuff is much harder to handle and I accenently got some from a diffrent source

Great Stuff, doesn't kink too easily (er, less prone to kinking than the stuff from Home Depot)

So all of this was enough to force me to go to the big box store and buy the Rain Bird tubing they have there - which is the solid black standard stuff.

This lighter stuff is easier to work with.

This stuff is great for running straight from one point to another, but if you need to round corners or make a bunch of small holes in this for drip lines, you can do much better than this.