What are the best options for extending a 30-day visa in Jomtien?

Many users suggest that it is not necessary to hire an agent for a 30-day visa extension in Jomtien, as the process is straightforward if done personally. Some express that while going to the immigration office can involve long waits, agents in the area can simplify the experience, sometimes for a fee around 1900-4000 baht. Several commenters recommend specific agents, including one next to the immigration office on Soi 5 and another named 'Ed Visa.' There's also discussion about the potential to handle extension requests at different locations, including Trat immigration for those on Ko Chang.