I've used Touchdown several times for trips to the Far and Middle East and have to say I've never had any problems. Prices for flights are very good indeed. As a comparison, flight only LHR-MLE via CMB through a travel agent would be in the region of £800.00 sterling per person. I got 2 return adult tickets AND full board accommodation with transfers for £1400.00 sterling.
However, I've just returned from TPA using
www.Priceline.co.uk and got 3 return adult tickets with US Airways for £720.00 sterling. Give them a go, they get my thumbs up.