Wellbutrin has a low risk of sexual effects but you have to take it at the same time every day. This is because it increases the risk of seizures. http://depression.emedtv.com/wellbut...d-alcohol.html
Info on wellbutrin and alcohol.
You really aren't supposed to drink with any SSRI (or Wellbutrin). If you are drinking a small amount infrenquently I probably wouldn't personally worry a lot about SSRI's (celexa, zoloft for example) assuming you don't have liver issues. Zoloft might be the best mix with alcohol. But I probably would not pick my SSRI based on alcohol use you describe. Just realize the alcohol may affect you more than it does when you aren't on an SSRI.
Effexor and Paxil have really huge withdrawal effects so avoid those in your case.