The flight comparison search engine on globatravelmarket.co.uk is faster and easier to use than a few I've seen, though it's still got a few flaws - it's a bit of an effort to switch which day you want to search for flights and there have been a couple of times when the deals shown aren't there when you click through to the site (or they're only available for very specific and inconvenient times) but it's still been the site I've relied on for finding good flight deals over the past couple of years.