Yes to Urban above and also, Most people that I read here state the difference as:
PG - not as thick, more flavor, but less vaper, and doesn't clog attys as bad as VG...
but, if you really like the vaper production, VG is it...just might have to clean your atty out more...
I use mostly VG,,,just my preference...But, some vendors will actually mix both together for you with whatever percentage of each you want...I guess the best of both worlds...
Enjoy....