Reviving this to point out that my Yongnuo YN568EX II is marvellous.
It was £68 and is the equivalent of £400 Canon Speedlights (Same price as a decent enthusiast DSLR)
You can set yourself up with a decent Yongnuo multi-strobe budget Studio (Yongnuo wireless triggers and Ebay Umbrellas, backgrounds..etc) for the price of just one Canon Speedlight.