"I have used RTW to arrange flights for my recent holiday of the lifetime. Originally I thought that I would find better deals searching the web myself, but they beat best business class flights I could fine by more then £2000.
Their communication before the sale was exceptional. They were fast in their replies and they follow up on all my little requests and answer all my (probably annoying) question.
In addition to providing excellent service before the sale, they follow it up by suggesting to use "trip-case" for managing my trip and also provided timely updates on my flights in case of delays.
Finally, they also helped me claiming missing miles for some of my flights.
I would definitely recommend RTW to anybody and will use them in future.