I am about to embark on a couple building projects on property I own. I am seriously considering the use of pex, but am a little iffy about the 90 degree turns. I am on a slab, so I want to run the plumbing in the interior walls which will include several 90 degree turns to traverse perpendicular walls. From what I was able to glean, this is a tight radius for pex and looks prone to kinking (or you have to chew up a lot of the studs to make room). Some people advocate using elbows, but that diminishes the value of using pex (to me). What do you do?