From experience and by what other travelers have told me, it seems that all of the travel agents are honest and give very good information. I’d still shop around if you have time though. I went here to check on some train tickets, but didn’t end up booking with them. The man working there gave me a lot of information and wasn’t pushy about getting me to book with him. In fact, he recommended that I book online myself to save money. In addition to this, VLR travels has the best wifi on the island. I know this isn’t saying much and you have to pay per hour, but even when Internet was down at every guest house on the island, I was able to get online here.