The nightlife is pretty good Martyn. Nightclubs are Orange, Revolution, Lazur. Den Viking also,mostly scandinavians and Disco Mania, which is mostly Bulgarian.
Sunny Beach Party Crew arrange pub crawls and a visit to Orange and Revolution. Last year it was about 10lev to join in and that included a drink or shot in about 6bars and entrance and one drink in both clubs. Sorry cant comment any more, my clubbing days are over!!