Mykonos has the 'best' party scene of the two islands, but this really depends on what you're looking for. It's known for its upscale clubs and beach parties, which attract celebrities and DJs from around the world. Corfu, on the other hand, offers a mix of nightlife options with a more laid-back vibe compared to Mykonos. It has a range of bars and clubs, especially in areas like Kavos and Sidari, which are popular among younger crowds and known for their open-air nightclubs and beach parties.