I'm thinking about a nice christmas present for someone. A nice big fake cock would be great. Which ones feel the best? I always had my eye on just getting a normal one made of silicon or what have you, but I have just came across a beautiful "crystal cut" glass cock made by Phallix. Do glass ones (supposedly retain more heat or cold your choice) feel better and are of better quality? I also want to make a mold of mine but preferably in black. Maybe one at a time. Glass or Plastic?