I call it all PEX, but everything that I got was the shark bite brand. PEX is more fun to say than shark bite.
I did all straight 10 foot lengths with elbows and couples (there was only one run that needed more than 10 feet). I used hose clamps (1/2" larger than the pipe) to hold the pipe in place before and after every elbow, couple, or tee to prevent any tension. I left everything open for about a week until I was positive that I didn't have any leakers.