Try Milagro silver, it's very decent and usually costs the same or a slight bit more than cuervo. I wouldn't sip it, but I would shoot it. Yes Cuervo is the worst hang over ever. I drank a bottle of it and I wouldn't wish that on my worst enemy. I did it in one night never to have to drink it again. AWFUL stuff.
Bottle looks like this
http://www.tequila.net/images/storie...1179983697.jpg