Hi Keith
I have the Canon 10-22mm which is a great lens, but your post was for an inexpensive wide angle. I think if I was looking for an inexpensive wide angle now I would go for a used Sigma.
Have you tried any lenses? Maybe drop into a store over xmas and try the Canon, Sigma and Tokina?
Don't forget the Tokina 11-16 f/2.8 as well. It has a nice wide aperture, built like a tank and supersharp.
http://www.alanf.co.uk/index.php?showimage=371
what the best, blue or yellow?
some v good shots there