I don't know what they are like to the States but we flew with them once to Kerela and wouldn't touch them again. They put us on a plane that we would have expected to fly to Spain in and the service was the worst I have ever had on a flight.
The food was inedible, even the cheese crackers which didn't need cooking! I'm not sure what the meal was - it's not that I can't remember I'm just not sure what it was. The plane was really hot and the cabin crew told us at first that the Captain refused to turn it down. After people started really kicking up a fuss they told us that the Captain couldn't turn it down. They wouldn't get drinks for anyone, bearing in mind the plane was really hot, and confiscated any drinks that people had bought on board.
The entertainment system was broken so we had no monitors or music. They told us this after they had sold the earphones and, of course, wouldn't refund anyone. How the crew didn't get punched by the passengers I don't know. The flight back wasn't as bad (at least the plane was cool!) but it still was very poor.
Perhaps we got a 'bad one' but we would never go with them again. I'm sure there are plenty of people who have positive experiences but, as they say, it only takes one.