I really like Explosive RO even though it is a mid-rate server (not a fan of midrates). First thing I like is the GM efforts to answer everybody queries. Like a growing community he plans to hire customer support staff on different timezones to cater all the players' needs. Second thing great about it is because you can enjoy the server with less or without donation items (you can farm almost everything). Lastly he always host events and asks players personally about their game experiences.