I've hopped in and out of RO, and always look for low rate servers. So far the best one is definitely HeRO. I'm playing here for 2months-ish now an encountered little to no issues! Friendly community and GMs, newbie friendly quests and stable economy, the GMs are quick to respond with questions and suggestions and are very active on discord. My only critique is the lack of events for players to mess with, but overall a server worth a try, maybe this'll be your new RO home~.