I used to ride a Jett, and now I have a Ruby.

Jett:
-too flexible and squishy
-too wide at middle (more chafing on inner thigh)
-more padding holds sweat and rain and whatever else and gets stinky

Ruby
-much firmer and lighter feeling. better feeling of power transfer, because butt bones are held more stable (less rocking from a more flexible saddle)
-requires a break-in period (sore butt bones at first!), but will mold to you
-i don't find the plastic tip to be any more annoying than the tall sides of the Jett towards the front
-doesn't get all sweat soaked
-i have white, and it gets dingy, but eh oh well. it looks hot!
-looks less girly, more like the Toupe (which I love), but is a better fit for me because I needed more width at the sit bones.