I've used cheaptickets several times. I look up the information on the web site then call with the itinerary I want and book it over the phone. I'm too paraniod to put my credit card on the net. I have always gotten miles with tickets from them.

One thing to note though. Make sure that what you want is what you order. Change fees are high and difficult. This spring I had a vacation ticket Seattle to Tampa via Vegas. The weekend I was outbound the company I work for wanted to send me to Vegas for training. It was cheaper to send someone else than change my ticket to allow the stopover.