I've been using Emerald Square for about 5 years now. I even used them for my daughter's wedding and they were great. Since then I've used them many, many times to take me to Logan and Green. I don't know what that other reviewer was talking about. I've never had a bad experience with this company.
I can say that they are not the least expensive guys around, but I believe you get what you pay for. Their cars are new, their drivers are pros and I know they'll show up where and when they are suppose to. Anyone shopping around soley for the cheapest deal in town - this isn't the company for you. This is quality and luxury and as I said before, I don't mind paying a little more to get the best. I've also heard that a lot of the Patriots use them.