The Omen, I had a very bad experience once with JD, and I can no longer drink it. The thought of drinking the stuff simply makes me sick these days. If I am going to mix something with coke, I mix Rum with it now.
Termin8, if you really want to make a good drink for your friends, take some Vodka, add some Orange Juice, and mix it up. Screwdrivers will get you screwed up really fast, and they taste good doing it. They are one of my favorite drinks.
And yes, Tequila is known to get you shitfaced quicker than a cowpie and an outstretched leg.